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CVE-2011-2921

ktsuss versions 1.4 and prior has the uid set to root and does not drop privileges prior to...

9.8 CriticalPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

83.1%Up 0.1 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 9.8

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.

Record
CVE-2011-2921
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-273
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2011-2921
Updated
2026-11-02
EUVDEUVD-2011-2894 No score

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.

Record
EUVD-2011-2894
Updated
2026-11-03
GitHub AdvisoriesGHSA-gp69-8v27-vccw 9.8

ktsuss versions 1.4 and prior has the uid set to root and does not drop privileges prior to...

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.

Record
GHSA-gp69-8v27-vccw
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-273
Updated
2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBktsuss 1.4 - suid Privilege Escalation (Metasploit)2019-09-03
Metasploitktsuss suid Privilege Escalation2011-08-13

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, Metasploit, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-2921 is a critical vulnerability (CVSS 9.8) in Ktsuss, published November 19, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 83.1%, the 99th percentile. No source names a fixed version.

References

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