Is CVE-2011-1924 in the CISA KEV catalog?

No. CVE-2011-1924 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1924?

CVE-2011-1924 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2011-1924?

CVE-2011-1924 has an EPSS score of 2.82% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-1924?

Upgrade tor on debian 11 to 0.2.1.30-1 or later.

CVE & CISA-KEV Catalog

CVE-2011-1924

MEDIUMEPSS 85th pctl

5.0

CVSS v2

NVD

Description

Buffer overflow in the policy_summarize function in or/policies.c in Tor before 0.2.1.30 allows remote attackers to cause a denial of service (directory authority crash) via a crafted policy that triggers creation of a long port list.

CWE-119Buffer Overflow

How to fix

Remediation Available

torDebian

Fixed in:0.2.1.30-1CVE-2011-1924

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.82%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch3

Vendor Advisory2

Other references3

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.