CVE-2025-8746: A vulnerability, which was classified as problematic, was found in GNU libopts up to 27.6

Q: How do I fix CVE-2025-8746?

libopts: upgrade to newer than 27.6. Exact commands for each OS are on this page.

Q: Is CVE-2025-8746 being exploited?

CVE-2025-8746 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-8746 affect?

CVE-2025-8746 affects libopts. Severity is low (CVSS 3.3). A vulnerability, which was classified as problematic, was found in GNU libopts up to 27.6. Affected is the function __strstr_sse2. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit ha

Q: How urgent is CVE-2025-8746?

Priority 20/100. Public exploit reference

Routine

LOW 3.3UPGRADE

CVE-2025-8746 is a low-severity flaw (CVSS 3.3) affecting libopts. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as problematic, was found in GNU libopts up to 27.6. Affected is the function __strstr_sse2. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. This issue was initially reported to the tcpreplay project, but the code maintainer explains, that this "bug appears to be in libopts which is an external library

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-119, CWE-787
Published	2025-08-09
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: gnu

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-09 06:15 UTCPublished CVE record published
2026-06-17 10:07 UTCUpdated Record last modified

gnu libopts UPGRADE

Affected: <= 27.6

Fixed in: newer than 27.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libopts || rpm -q libopts || libopts --version

2. UPGRADE to newer than 27.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libopts

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libopts

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-8746?

libopts: upgrade to newer than 27.6. Exact commands for each OS are on this page.

Is CVE-2025-8746 being exploited?

CVE-2025-8746 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-8746 affect?

CVE-2025-8746 affects libopts. Severity is low (CVSS 3.3). A vulnerability, which was classified as problematic, was found in GNU libopts up to 27.6. Affected is the function __strstr_sse2. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit ha

How urgent is CVE-2025-8746?

Priority 20/100. Public exploit reference

References

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