Is CVE-2011-2699 in the CISA KEV catalog?

No. CVE-2011-2699 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-2699?

CVE-2011-2699 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2011-2699?

CVE-2011-2699 has an EPSS score of 5.57% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-2699?

Upgrade linux kernel to 3.1 or later.

CVE & CISA-KEV Catalog

CVE-2011-2699

HIGHEPSS 92th pctl

7.5

CVSS v3

NVD

Description

The IPv6 implementation in the Linux kernel before 3.1 does not generate Fragment Identification values separately for each destination, which makes it easier for remote attackers to cause a denial of service (disrupted networking) by predicting these values and sending crafted packets.

How to fix

Remediation Available

linux kernelNVD

Affected:< 3.1Fixed in:3.1CVE-2011-2699derived 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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

5.57%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Patch3

Third-Party Advisory2

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.