# CVE-2026-25061: tcpflow has TIM Element OOB Write in wifipcap


- **Severity:** Medium 5.5 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 29 Jan 2026
- **Updated:** 10 Feb 2026
- **Also known as:** DEBIAN-CVE-2026-25061, DLA-4478-1, GHSA-q5q6-frrv-9rj6, MGASA-2026-0113, UBUNTU-CVE-2026-25061

## What is CVE-2026-25061?

CVE-2026-25061 is a medium-severity vulnerability in Debian Debian Linux, published on 29 Jan 2026. 

### Official description

tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past `tim.bitmap[251]`. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in `handle_beacon()` and related handlers. As of time of publication, no known patches are available.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-25061?

It affects 2 products.


Products: Debian Debian Linux, Digitalcorpora Tcpflow.

## How do I fix CVE-2026-25061?

Upgrade to a fixed version.

## Is CVE-2026-25061 being exploited?

There is no known exploitation of CVE-2026-25061 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-25061 and fix it if it is affected.

What it is: CVE-2026-25061 is a medium-severity vulnerability in Debian Debian Linux, published on 29 Jan 2026. 
Exploitation: There is no known exploitation of CVE-2026-25061 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2026-25061/ (Markdown: https://insights.sbomify.com/CVE-2026-25061/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-25061
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25061
- OSV: https://osv.dev/vulnerability/CVE-2026-25061

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-25061/
Summaries are generated and may contain mistakes; the official description above is the record.