Is CVE-2011-5055 in the CISA KEV catalog?

No. CVE-2011-5055 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-5055?

CVE-2011-5055 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2011-5055?

CVE-2011-5055 has an EPSS score of 1.58% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-5055?

Upgrade maradns on debian 11 to 1.4.09-1 or later.

CVE & CISA-KEV Catalog

CVE-2011-5055

MEDIUMEPSS 73th pctl

5.0

CVSS v2

NVD

Description

MaraDNS 1.3.07.12 and 1.4.08 computes hash values for DNS data without properly restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted queries with the Recursion Desired (RD) bit set. NOTE: this issue exists because of an incomplete fix for CVE-2012-0024.

CWE-20Improper Input Validation

How to fix

Remediation Available

maradnsDebian

Fixed in:1.4.09-1CVE-2011-5055

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

1.58%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Patch1

samiam.org

Other references3

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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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.