CVE-2011-2921

Name: CVE-2011-2921
Creator: NVD / NIST
Published: 2019-11-19T17:15:10.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 82.83%

Last modified Jun 16, 2026

CVE-2011-2921 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. ktsuss versions 1.4 and prior has the uid set to root and does not drop privileges prior to executing user specified commands, which can result in command execution with root privileges.. EPSS estimates a 82.83% chance of exploitation in the next 30 days.

Description

ktsuss versions 1.4 and prior has the uid set to root and does not drop privileges prior to executing user specified commands, which can result in command execution with root privileges.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

82.83%

99.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-273

Affected Software

Vendor	Product	Versions
Ktsuss Project	Ktsuss	<= 1.4

References

http://packetstormsecurity.com/files/154307/ktsuss-Suid-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2011-2921Broken Link, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-2921Third Party Advisory
http://packetstormsecurity.com/files/154307/ktsuss-Suid-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2011-2921Broken Link, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-2921Third Party Advisory

Timeline

Published: Nov 19, 2019
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-2921?

ktsuss versions 1.4 and prior has the uid set to root and does not drop privileges prior to executing user specified commands, which can result in command execution with root privileges.

How severe is CVE-2011-2921?

CVE-2011-2921 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 82.83% probability of exploitation in the next 30 days.

How do I fix CVE-2011-2921?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2921?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST