Is CVE-2011-1093 in the CISA KEV catalog?

No. CVE-2011-1093 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1093?

CVE-2011-1093 has a CVSS v2 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2011-1093?

CVE-2011-1093 has an EPSS score of 3.41% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-1093?

Upgrade linux kernel to 2.6.38 or later.

CVE & CISA-KEV Catalog

CVE-2011-1093

HIGHEPSS 87th pctl

7.8

CVSS v2

NVD

Description

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

linux kernelNVD

Affected:< 2.6.38Fixed in:2.6.38CVE-2011-1093derived from NVD

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

3.41%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch3

Third-Party Advisory3

Other references2

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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.