CVE-2011-2921

CRITICALNVD 9.89.8—

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 98.8%
KEV: Not listed

Published

November 19, 2019

Last Modified

November 21, 2024

References (6)

secalert@redhathttp://packetstormsecurity.com/files/154307/ktsuss-Suid-Privilege-Escalation.html
secalert@redhathttps://access.redhat.com/security/cve/cve-2011-2921
secalert@redhathttps://security-tracker.debian.org/tracker/CVE-2011-2921
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/154307/ktsuss-Suid-Privilege-Escalation.html
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/cve-2011-2921
af854a3a-2127-422b-91ae-364da2661108https://security-tracker.debian.org/tracker/CVE-2011-2921

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-273Improper Check for Dropped Privileges

Data Freshness Timeline

(refreshed 4× in last 7d / 4× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-23 03:21 UTCEG score recompute
2026-05-23 03:21 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2011-2921?

CVE-2011-2921 is a critical vulnerability published on November 19, 2019. 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.

When was CVE-2011-2921 disclosed?

CVE-2011-2921 was first published in the National Vulnerability Database on November 19, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2011-2921 actively exploited?

CVE-2011-2921 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2011-2921?

CVE-2011-2921 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2011-2921?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-2921, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2011-2921

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Is Your Infrastructure Affected by CVE-2011-2921?

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Frequently asked(5)

What is CVE-2011-2921?

When was CVE-2011-2921 disclosed?

Is CVE-2011-2921 actively exploited?

What is the CVSS score of CVE-2011-2921?

CVE-2011-2921 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2011-2921?

CVE-2011-2921

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2011-2921?

CVE-2011-2921

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2011-2921?

Published

Last Modified

References (6)

Frequently asked(5)

Published

Last Modified

References (6)

Frequently asked(5)