Is CVE-2011-4315 in the CISA KEV catalog?

No. CVE-2011-4315 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4315?

CVE-2011-4315 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2011-4315?

CVE-2011-4315 has an EPSS score of 6.07% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-4315?

Upgrade nginx on debian 11 to 1.1.8-1 or later.

CVE & CISA-KEV Catalog

CVE-2011-4315

MEDIUMEPSS 93th pctl

6.8

CVSS v2

NVD

Description

Heap-based buffer overflow in compression-pointer processing in core/ngx_resolver.c in nginx before 1.0.10 allows remote resolvers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a long response.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

nginxDebian

Fixed in:1.1.8-1CVE-2011-4315

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

6.07%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Patch3

Vendor Advisory1

nginx.org

Third-Party Advisory6

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	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.