# CVE-2025-7546: GNU Binutils elf.c bfd_elf_set_group_contents out-of-bounds write

> A local attacker can trigger an out-of-bounds write in GNU Binutils, potentially leading to code execution or denial of service.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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:** 13 Jul 2025
- **Updated:** 15 Oct 2026
- **Also known as:** AZL-65349, AZL-65358, AZL-65381, AZL-65400, BELL-CVE-2025-7546, DEBIAN-CVE-2025-7546, ECHO-b3e9-ba9b-1f40, GHSA-v8v5-48x9-6r8p, MINI-vc26-r6fr-mpcj, OESA-2025-1975, OESA-2025-1976, OESA-2025-1977, ROOT-OS-DEBIAN-12-CVE-2025-7546, UBUNTU-CVE-2025-7546

## What is CVE-2025-7546?

CVE-2025-7546 is a medium-severity memory corruption vulnerability in Gnu Binutils, published on 13 Jul 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, has been found in GNU Binutils 2.45. Affected by this issue is the function bfd_elf_set_group_contents of the file bfd/elf.c. The manipulation leads to out-of-bounds write. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The name of the patch is 41461010eb7c79fee7a9d5f6209accdaac66cc6b. It is recommended to apply a patch to fix this issue.

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-2025-7546?

It affects 1 product.


Products: Gnu Binutils.

## How do I fix CVE-2025-7546?

Apply the vendor's patch.

## Is CVE-2025-7546 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7546 exists.

## Other vulnerabilities in Gnu Binutils

- [CVE-2017-7614](https://insights.sbomify.com/CVE-2017-7614/): Null dereference in n/a (critical 9.8)
- [CVE-2014-9939](https://insights.sbomify.com/CVE-2014-9939/): Memory corruption in n/a (critical 9.8)
- [CVE-2017-7226](https://insights.sbomify.com/CVE-2017-7226/): Information disclosure in n/a (critical 9.1)
- [CVE-2017-6969](https://insights.sbomify.com/CVE-2017-6969/): Information disclosure in n/a (critical 9.1)
- [CVE-2020-19726](https://insights.sbomify.com/CVE-2020-19726/): Denial of service in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-7546 and fix it if it is affected.

What it is: CVE-2025-7546 is a medium-severity memory corruption vulnerability in Gnu Binutils, published on 13 Jul 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-2025-7546 exists.

Affected product: Gnu Binutils. 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-2025-7546/ (Markdown: https://insights.sbomify.com/CVE-2025-7546/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-7546
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-7546
- OSV: https://osv.dev/vulnerability/CVE-2025-7546

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-7546/
Summaries are generated and may contain mistakes; the official description above is the record.