CVE-2025-8746 GNU libopts __strstr_sse2 memory corruption
Local attackers can exploit memory corruption in GNU libopts to potentially execute code or escalate privileges, affecting unsupported versions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-8746?
CVE-2025-8746 is a medium-severity memory corruption vulnerability in GNU libopts, published on 9 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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." This vulnerability only affects products that are no longer supported by the maintainer.
Which versions are affected by CVE-2025-8746?
It affects 1 product.
Linux distribution packages (5)
autogen SUSE:Linux Enterprise Server 16.0 | All versions | 5.18.16-160000.3.1 |
autogen SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 5.18.16-160000.3.1 |
autogen openSUSE:Leap 16.0 | All versions | 5.18.16-160000.3.1 |
autogen openSUSE:Tumbleweed | All versions | 5.18.16-8.1 |
tcpreplay openSUSE:Tumbleweed | All versions | 4.5.1-2.1 |
Products include Gnu Libopts.
How do I fix CVE-2025-8746?
Product is end of life, replace it.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-8746 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8746 exists.
Sources
Also known as DEBIAN-CVE-2025-8746, GHSA-4cc6-crfh-q58w, OESA-2026-1254, OESA-2026-1255, OESA-2026-1256, OESA-2026-1317 and 7 more.