Is CVE-2012-4565 in the CISA KEV catalog?

No. CVE-2012-4565 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-4565?

CVE-2012-4565 has a CVSS v2 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2012-4565?

CVE-2012-4565 has an EPSS score of 0.49% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-4565?

Upgrade linux on debian 11 to 3.2.35-1 or later.

CVE & CISA-KEV Catalog

CVE-2012-4565

MEDIUM

4.7

CVSS v2

NVD

Description

The tcp_illinois_info function in net/ipv4/tcp_illinois.c in the Linux kernel before 3.4.19, when the net.ipv4.tcp_congestion_control illinois setting is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) by reading TCP stats.

CWE-189

How to fix

Remediation Available

linuxDebian

Fixed in:3.2.35-1CVE-2012-4565

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

0.49%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Exploit1

github.com

Other references17

Related Vulnerabilities

Other CWE-189 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-1538	High	10.0	99%	-	-
CVE-2006-3747	High	7.6	96%	-	Fix
CVE-2007-0071	High	9.3	93%	-	-
CVE-2015-3829	High	10.0	90%	-	-
CVE-2015-3864	High	10.0	87%	-	-
CVE-2015-1539	High	10.0	86%	-	-

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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.