The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the af8d043f-20df-11f0-b9c5-000c295725e4 advisory.

    Axel Mierczuk reports:

                By default, the Redis configuration does not limit the                 output buffer of normal clients (see                 client-output-buffer-limit). Therefore, the output buffer                 can grow unlimitedly over time. As a result, the service                 is exhausted and the memory is unavailable.


                When password authentication is enabled on the Redis                 server, but no password is provided, the client can still                 cause the output buffer to grow from NOAUTH responses                 until the system will run out of memory.


Tenable has extracted the preceding description block directly from the FreeBSD 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 MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-10201:02 advisory.

    * redis: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated     client (CVE-2025-21605)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-10499:03 advisory.

    [security - high] redis:7 security update     For detailed information on changes in this release, see MIRACLE LINUX 9 Release     Notes linked from the References section.
    CVE(s):
    CVE-2025-21605

Tenable has extracted the preceding description block directly from the MiracleLinux 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 RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2025:7438 advisory.

    * redis: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated     client (CVE-2025-21605)

Tenable has extracted the preceding description block directly from the RockyLinux 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 Fedora 40 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-59ebc165fc advisory.

    **Valkey 8.0.3**  -  Released Wed 23 Apr 2025

    Upgrade urgency SECURITY: This release includes security fixes we recommend you     apply as soon as possible.

    Bug fixes

    * Optimize RDB load performance and fix cluster mode resizing on replica side (#1199)
    * Fix memory leak in forgotten node ping ext code path (#1574)
    * Fix cluster info sent stats for message with light header (#1563)
    * Fix module LatencyAddSample still work when latency-monitor-threshold is 0 (#1541)
    * Fix potential crash in radix tree recompression of huge keys (#1722)
    * Fix error SSL routines::bad length when connTLSWrite is called second time with smaller buffer (#1737)
    * Fix temp file leak druing replication error handling (#1721)
    * Fix ACL LOAD crash on replica since the primary client don't has a user (#1842)
    * Fix RANDOMKEY infinite loop during CLIENT PAUSE (#1850)
    * fix: add samples to stream object consumer trees (#1825)
    * Fix cluster slot stats assertion during promotion of replica (#1950)
    * Fix panic in primary when blocking shutdown after previous block with timeout (#1948)
    * Ignore stale gossip packets that arrive out of order (#1777)
    * Fix incorrect lag reported in XINFO GROUPS (#1952)
    * Avoid shard id update of replica if not matching with primary shard id (#573)

    Security fixes

    * **CVE-2025-21605** Limit output buffer for unauthenticated clients (#1993)

Tenable has extracted the preceding description block directly from the Fedora 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 Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:4441 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: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated     client (CVE-2025-21605)

    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 this issue 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 a vulnerability as referenced in the RHSA-2025:7538 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: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated     client (CVE-2025-21605)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:7686 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: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated     client (CVE-2025-21605)

    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 this issue 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 a vulnerability as referenced in the RHSA-2025:7509 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: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated     client (CVE-2025-21605)

    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 this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
234819	FreeBSD : redis,valkey -- DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated client (af8d043f-20df-11f0-b9c5-000c295725e4)	Nessus	FreeBSD Local Security Checks	4/24/2025	4/24/2025	high
283085	MiracleLinux 9 : redis-6.2.18-1.el9_6 (AXSA:2025-10201:02)	Nessus	Miracle Linux Local Security Checks	1/13/2026	1/13/2026	high
283138	MiracleLinux 9 : redis:7 (AXSA:2025-10499:03)	Nessus	Miracle Linux Local Security Checks	1/13/2026	1/20/2026	high
266481	RockyLinux 9 : redis (RLSA-2025:7438)	Nessus	Rocky Linux Local Security Checks	10/4/2025	10/4/2025	high
235106	Fedora 40 : valkey (2025-59ebc165fc)	Nessus	Fedora Local Security Checks	5/3/2025	5/3/2025	high
235120	RHEL 8 : redis:6 (RHSA-2025:4441)	Nessus	Red Hat Local Security Checks	5/5/2025	6/5/2025	high
235922	RHEL 9 : redis:7 (RHSA-2025:7538)	Nessus	Red Hat Local Security Checks	5/14/2025	6/5/2025	high
236800	RHEL 8 : redis:6 (RHSA-2025:7686)	Nessus	Red Hat Local Security Checks	5/15/2025	6/5/2025	high
237860	RHEL 10 : valkey (RHSA-2025:7509)	Nessus	Red Hat Local Security Checks	6/5/2025	6/5/2025	high

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