Is CVE-2011-1764 in the CISA KEV catalog?

No. CVE-2011-1764 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1764?

CVE-2011-1764 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2011-1764?

CVE-2011-1764 has an EPSS score of 3.94% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-1764?

Upgrade exim4 on debian 11 to 4.75-3 or later.

CVE & CISA-KEV Catalog

CVE-2011-1764

HIGHEPSS 89th pctl

7.5

CVSS v2

NVD

Description

Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character.

CWE-134

How to fix

Remediation Available

exim4Debian

Fixed in:4.75-3CVE-2011-1764

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

3.94%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch4

Other references3

Related Vulnerabilities

Other CWE-134 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13160	Critical	9.8	81%	-	Fix
CVE-2023-22374	High	8.5	73%	-	-
CVE-2012-1851	High	10.0	66%	-	-
CVE-2024-23113	Critical	9.8	62%	KEV	-
CVE-2012-3569	High	9.3	48%	-	-
CVE-2018-6317	Critical	9.1	44%	-	-

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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.