Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:25925 advisory.

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26540 advisory.

    Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can     contain strings, hashes, lists, sets and sorted sets.  You can run atomic operations on these types, like     appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection,     union and difference; or getting the member with highest ranking in a sorted set.  In order to achieve its     outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can     persist it either by dumping the dataset to disk every once in a while, or by appending each command to a     log.  Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first     synchronization, auto-reconnection on net split and so forth.  Other features include Transactions,     Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave     like a cache.  You can use Valkey from most programming languages also.

    Security Fix(es):

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26306 advisory.

    Redis is an advanced key-value store. It is often referred to as a data-structure server since keys can     contain strings, hashes, lists, sets, and sorted sets. For performance, Redis works with an in-memory data     set. You can persist it either by dumping the data set to disk every once in a while, or by appending each     command to a log.

    Security Fix(es):

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25925 advisory.

    Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can     contain strings, hashes, lists, sets and sorted sets.  You can run atomic operations on these types, like     appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection,     union and difference; or getting the member with highest ranking in a sorted set.  In order to achieve its     outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can     persist it either by dumping the dataset to disk every once in a while, or by appending each command to a     log.  Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first     synchronization, auto-reconnection on net split and so forth.  Other features include Transactions,     Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave     like a cache.  You can use Valkey from most programming languages also.

    Security Fix(es):

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:25219 advisory.

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:25216 advisory.

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25216 advisory.

    Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can     contain strings, hashes, lists, sets and sorted sets.  You can run atomic operations on these types, like     appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection,     union and difference; or getting the member with highest ranking in a sorted set.  In order to achieve its     outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can     persist it either by dumping the dataset to disk every once in a while, or by appending each command to a     log.  Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first     synchronization, auto-reconnection on net split and so forth.  Other features include Transactions,     Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave     like a cache.  You can use Valkey from most programming languages also.

    Security Fix(es):

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25219 advisory.

    Redis is an advanced key-value store. It is often referred to as a data-structure server since keys can     contain strings, hashes, lists, sets, and sorted sets. For performance, Redis works with an in-memory data     set. You can persist it either by dumping the data set to disk every once in a while, or by appending each     command to a log.

    Security Fix(es):

    * redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)

    * redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)

    * redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0403 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-23479:
    Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client     flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked     command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-     after-free that may lead to remote code execution. This has been patched in version 8.6.3.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2099-1 advisory.

    This update for redis fixes the following issues

    - CVE-2026-23479: use-after-free in unblock client flow may lead to remote code execution (bsc#1264164).
    - CVE-2026-23631: Lua use-after-free via the master-replica synchronization mechanism may lead to remote     code execution       (bsc#1264165).
    - CVE-2026-25243: invalid memory access in RESTORE command via a specially crafted serialized payload may     lead to remote       code execution (bsc#1264166).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1748 advisory.

    Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client     flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked     command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-     after-free that may lead to remote code execution. This has been patched in version 8.6.3.
    (CVE-2026-23479)

    Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an     authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-     free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code     execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where     replica-read-only is disabled. This is patched in version 8.6.3. (CVE-2026-23631)

    Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command     does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE     can supply a crafted serialized payload that triggers invalid memory access and may lead to remote code     execution. A workaround is to restrict access to the RESTORE command with ACL rules. This is patched in     version 8.6.3. (CVE-2026-25243)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1949-1 advisory.

    This update for valkey fixes the following issues

    - CVE-2026-23479: use-after-free in unblock client flow may lead to remote code execution (bsc#1264164).
    - CVE-2026-23631: Lua use-after-free via the master-replica synchronization mechanism may lead to remote     code execution       (bsc#1264165).
    - CVE-2026-25243: invalid memory access in RESTORE command via a specially crafted serialized payload may     lead to remote       code execution (bsc#1264166).

    Changes for valkey:

    - Update to 8.0.9.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1950-1 advisory.

    This update for valkey fixes the following issues

    - CVE-2026-23479: use-after-free in unblock client flow may lead to remote code execution (bsc#1264164).
    - CVE-2026-23631: Lua use-after-free via the master-replica synchronization mechanism may lead to remote     code execution       (bsc#1264165).
    - CVE-2026-25243: invalid memory access in RESTORE command via a specially crafted serialized payload may     lead to remote       code execution (bsc#1264166).

    Changes for valkey:

      - Update to 8.0.9:

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-114b1e5d3a advisory.

    ## Version 8.0.9

    Security fixes

    -    (**CVE-2026-23479**) Use-After-Free in unblock client flow
    -    (**CVE-2026-25243**) Invalid Memory Access in RESTORE command
    -    (**CVE-2026-23631**) Use-after-free when full sync occurs during a yielding Lua/function execution




Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-76cf27ea56 advisory.

    ## Version 8.1.7

    Security fixes

    -    (**CVE-2026-23479**) Use-After-Free in unblock client flow
    -    (**CVE-2026-25243**) Invalid Memory Access in RESTORE command
    -    (**CVE-2026-23631**) Use-after-free when full sync occurs during a yielding Lua/function execution




Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3e31dafe5c advisory.

    ## Version 9.0.4

    Security fixes

    -    (**CVE-2026-23479**) Use-After-Free in unblock client flow
    -    (**CVE-2026-25243**) Invalid Memory Access in RESTORE command
    -    (**CVE-2026-23631**) Use-after-free when full sync occurs during a yielding Lua/function execution



Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client     flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked     command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-     after-free that may lead to remote code execution. This has been patched in version 8.6.3.
    (CVE-2026-23479)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
321393	RockyLinux 9 : valkey (RLSA-2026:25925)	Nessus	Rocky Linux Local Security Checks	high
321355	RHEL 10 : valkey (RHSA-2026:26540)	Nessus	Red Hat Local Security Checks	high
321226	RHEL 9 : redis:7 (RHSA-2026:26306)	Nessus	Red Hat Local Security Checks	high
321096	RHEL 9 : valkey (RHSA-2026:25925)	Nessus	Red Hat Local Security Checks	high
320946	RockyLinux 9 : redis:7 (RLSA-2026:25219)	Nessus	Rocky Linux Local Security Checks	high
320945	RockyLinux 10 : valkey (RLSA-2026:25216)	Nessus	Rocky Linux Local Security Checks	high
320625	RHEL 10 : valkey (RHSA-2026:25216)	Nessus	Red Hat Local Security Checks	high
320563	RHEL 9 : redis:7 (RHSA-2026:25219)	Nessus	Red Hat Local Security Checks	high
319746	TencentOS Server 4: redis (TSSA-2026:0403)	Nessus	Tencent Local Security Checks	high
317669	SUSE SLES15 Security Update : redis (SUSE-SU-2026:2099-1)	Nessus	SuSE Local Security Checks	high
316991	Amazon Linux 2023 : valkey, valkey-devel (ALAS2023-2026-1748)	Nessus	Amazon Linux Local Security Checks	high
315282	SUSE SLES15 Security Update : valkey (SUSE-SU-2026:1949-1)	Nessus	SuSE Local Security Checks	high
315274	SUSE SLES15 Security Update : valkey (SUSE-SU-2026:1950-1)	Nessus	SuSE Local Security Checks	high
315122	Fedora 42 : valkey (2026-114b1e5d3a)	Nessus	Fedora Local Security Checks	high
315119	Fedora 43 : valkey (2026-76cf27ea56)	Nessus	Fedora Local Security Checks	high
315109	Fedora 44 : valkey (2026-3e31dafe5c)	Nessus	Fedora Local Security Checks	high
312607	Linux Distros Unpatched Vulnerability : CVE-2026-23479	Nessus	Misc.	high

Detections

Analytics

CVE-2026-23479

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high