How severe is CVE-2011-3274?

CVE-2011-3274 has a CVSS 2.0 base score of 6.1, rated medium severity.

Is CVE-2011-3274 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3274?

CVE-2011-3274 primarily affects Cisco Ios. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3274?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-3274 published?

CVE-2011-3274 was published on 2011-10-03 and last updated on 2026-06-16.

CVE-2011-3274

CVE-2011-3274 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 6.1)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Ios
Published: 2011-10-03
Last modified: 2026-06-16

Description

Unspecified vulnerability in Cisco IOS 12.2SRE before 12.2(33)SRE4, 15.0, and 15.1, and IOS XE 2.1.x through 3.3.x, when an MPLS domain is configured, allows remote attackers to cause a denial of service (device crash) via a crafted IPv6 packet, related to an expired MPLS TTL, aka Bug ID CSCto07919.

Frequently asked questions

What is CVE-2011-3274?: Unspecified vulnerability in Cisco IOS 12.2SRE before 12.2(33)SRE4, 15.0, and 15.1, and IOS XE 2.1.x through 3.3.x, when an MPLS domain is configured, allows remote attackers to cause a denial of service (device crash) via a crafted IPv6 packet, related to an expired MPLS TTL, aka Bug ID CSCto07919.
How severe is CVE-2011-3274?: CVE-2011-3274 has a CVSS 2.0 base score of 6.1, rated medium severity.
Is CVE-2011-3274 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3274?: CVE-2011-3274 primarily affects Cisco Ios. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3274?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3274 published?: CVE-2011-3274 was published on 2011-10-03 and last updated on 2026-06-16.

References

Affected products (37)

cpe:2.3:o:cisco:ios:12.2\(33\)sre:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sre0a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sre1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sre2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sre3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2sre:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.1.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.1.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.1.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.2.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.2.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.2.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.3.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.3.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.3.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.4.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.4.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.4.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.4.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.4.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.5.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.5.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.6.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.6.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1.3s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1.4s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.3.0s:*:*:*:*:*:*:*

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