Detections
Analytics
RHEL 9 : gzip (RHSA-2026:61623)
medium Nessus Plugin ID 341730
Synopsis
The remote Red Hat host is missing one or more security updates for gzip.Description
The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:61623 advisory.The gzip packages contain the gzip (GNU zip) data compression utility. gzip is used to compress regular files. It replaces them with files containing the .gz extension, while retaining ownership modes, access, and modification times.
Security Fix(es):
* gzip: gzip: Arbitrary file overwrite via insecure temporary file handling in gzexe utility (CVE-2026-41991)
* gzip: gzip: Information disclosure via global buffer overflow in LZH decompression (CVE-2026-41992)
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.
Solution
Update the RHEL gzip package based on the guidance in RHSA-2026:61623.See Also
https://access.redhat.com/errata/RHSA-2026:61623
https://access.redhat.com/security/updates/classification/#moderate
Plugin Details
Severity: Medium
ID: 341730
File Name: redhat-RHSA-2026-61623.nasl
Version: 1.1
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 8/31/2026
Updated: 8/31/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.7
Percentile: 96.22
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2026-41992
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 6.9
Threat Score: 4.6
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:gzip
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 8/31/2026
Vulnerability Publication Date: 6/29/2026
Reference Information
CVE: CVE-2026-41991, CVE-2026-41992
RHSA: 2026:61623