CVE-2011-4012 — Cisco IOS 12.0, 15.0, and 15.1, when a Policy Feature Card 3C (PFC3C) is used, does not create a fragment entry during processing of an ICMPv6 ACL, which has unspecified impact and remote attack vectors, aka Bug ID CSCtj90091

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HIGH

Cisco IOS 12.0, 15.0, and 15.1, when a Policy Feature Card 3C (PFC3C) is used, does not create a fragment entry during processing of an ICMPv6 ACL, which has unspecified impact and remote attack vectors, aka Bug ID CSCtj90091

Published May 2, 2012

9.3

HIGH

CVSS 2.0

EPSS 1.45%

Description

Cisco IOS 12.0, 15.0, and 15.1, when a Policy Feature Card 3C (PFC3C) is used, does not create a fragment entry during processing of an ICMPv6 ACL, which has unspecified impact and remote attack vectors, aka Bug ID CSCtj90091.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.45% 0.01452

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01452

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.45% (0.01452)	72.46th	v5 (v2026.06.15)
Jun 15, 2026	1.47% (0.01468)	70.24th	v5 (v2026.06.15)
Mar 17, 2025	0.33% (0.00331)	53.83th	v4 (v2025.03.14)
Dec 12, 2024	0.22% (0.00219)	60.87th	v3 (v2023.03.01)
Jun 20, 2024	0.22% (0.00219)	60.14th	v3 (v2023.03.01)
Mar 23, 2023	0.22% (0.00219)	58.13th	v3 (v2023.03.01)
Mar 7, 2023	0.23% (0.00233)	59.54th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00885)	26.24th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (2)

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/release/notes/caveats_SXJ.html
x_refsource_CONFIRM
http://www.securitytracker.com/id?1027005
vdb-entryx_refsource_SECTRACK

Link	Providers	Tags
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/release/notes/caveats_SXJ.html		x_refsource_CONFIRM
http://www.securitytracker.com/id?1027005		vdb-entryx_refsource_SECTRACK

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published May 2, 2012

Updated Aug 6, 2024

Reserved Oct 6, 2011

Link CVE-2011-4012

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2011-4012

Red Hat

Severity n/a

Public date n/a

Links CVE-2011-4012