# 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.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`)
- **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:** Yes
- **Published:** 9 Aug 2025
- **Updated:** 11 Aug 2025
- **Also known as:** DEBIAN-CVE-2025-8746, GHSA-4cc6-crfh-q58w, OESA-2026-1254, OESA-2026-1255, OESA-2026-1256, OESA-2026-1317, OESA-2026-1318, OESA-2026-1424, SUSE-SU-2026:20590-1, UBUNTU-CVE-2025-8746, openSUSE-SU-2025:15557-1, openSUSE-SU-2025:15570-1, openSUSE-SU-2026:20270-1

## 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.

Weakness: CWE-787 (Out-of-bounds Write), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-8746?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `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: Gnu Libopts.

## How do I fix CVE-2025-8746?

Product is end of life, replace it.

## Is CVE-2025-8746 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8746 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-8746 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8746 exists.

Affected product: GNU libopts. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-8746/ (Markdown: https://insights.sbomify.com/CVE-2025-8746/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-8746
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-8746
- OSV: https://osv.dev/vulnerability/CVE-2025-8746

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-8746/
Summaries are generated and may contain mistakes; the official description above is the record.