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 command-line option.
Does this matter?
A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 1.0%. Treat it as high on anything reachable from the internet.
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.
- CVSS 2.0
- 4.6 MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 0.95% probability · 61th percentile
- Public exploits
- 1 in Exploit-DB · first 11 April 2011
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- nicholas marriott/tmux
- Source
- secalert@redhat.com
EPSS 1.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058367.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058452.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058548.html
- http://secunia.com/advisories/44081Vendor Advisory
- http://secunia.com/advisories/44239Vendor Advisory
- http://www.debian.org/security/2011/dsa-2212
- http://www.exploit-db.com/exploits/17147Exploit
- http://www.securityfocus.com/bid/47283
- http://www.vupen.com/english/advisories/2011/0897Vendor Advisory
- http://www.vupen.com/english/advisories/2011/1002Vendor Advisory
- http://www.vupen.com/english/advisories/2011/1015Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66693
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058367.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058452.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058548.html
- http://secunia.com/advisories/44081Vendor Advisory
- http://secunia.com/advisories/44239Vendor Advisory
- http://www.debian.org/security/2011/dsa-2212
- http://www.exploit-db.com/exploits/17147Exploit
- http://www.securityfocus.com/bid/47283
- http://www.vupen.com/english/advisories/2011/0897Vendor Advisory
- http://www.vupen.com/english/advisories/2011/1002Vendor Advisory
- http://www.vupen.com/english/advisories/2011/1015Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66693
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.