How severe is CVE-2011-3270?

CVE-2011-3270 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-3270 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3270?

CVE-2011-3270 primarily affects Cisco Ios. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3270?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-3270 published?

CVE-2011-3270 was published on 2011-10-03 and last updated on 2026-06-16.

CVE-2011-3270

CVE-2011-3270 is a high-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (75th 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 12.2SB before 12.2(33)SB10 and 15.0S before 15.0(1)S3a on Cisco 10000 series routers allows remote attackers to cause a denial of service (device reload) via a sequence of crafted ICMP packets, aka Bug ID CSCtk62453.

Frequently asked questions

What is CVE-2011-3270?: Unspecified vulnerability in Cisco IOS 12.2SB before 12.2(33)SB10 and 15.0S before 15.0(1)S3a on Cisco 10000 series routers allows remote attackers to cause a denial of service (device reload) via a sequence of crafted ICMP packets, aka Bug ID CSCtk62453.
How severe is CVE-2011-3270?: CVE-2011-3270 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-3270 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3270?: CVE-2011-3270 primarily affects Cisco Ios. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3270?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-3270 published?: CVE-2011-3270 was published on 2011-10-03 and last updated on 2026-06-16.

References

Affected products (50)

cpe:2.3:o:cisco:ios:12.2\(28\)sb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb8:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb9:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb10:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb11:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb12:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(28\)sb13:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb3x:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb8:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb9:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb10:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb11:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb12:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb13:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb14:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb15:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb16:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb17:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb18:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb19:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb20:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(31\)sb21:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sb1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sb2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sb3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sb4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sb5:*:*:*:*:*:*:*

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