Is CVE-2011-1573 in the CISA KEV catalog?

No. CVE-2011-1573 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1573?

CVE-2011-1573 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2011-1573?

CVE-2011-1573 has an EPSS score of 2.78% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-1573?

Upgrade linux kernel to 2.6.34 or later.

CVE & CISA-KEV Catalog

CVE-2011-1573

MEDIUMEPSS 85th pctl

5.9

CVSS v3

NVD

Description

net/sctp/sm_make_chunk.c in the Linux kernel before 2.6.34, when addip_enable and auth_enable are used, does not consider the amount of zero padding during calculation of chunk lengths for (1) INIT and (2) INIT ACK chunks, which allows remote attackers to cause a denial of service (OOPS) via crafted packet data.

CWE-682

How to fix

Remediation Available

linux kernelNVD

Affected:< 2.6.34Fixed in:2.6.34CVE-2011-1573derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.78%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch3

Third-Party Advisory1

rhn.redhat.com

Other references2

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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.