CVE-2011-4012: n/a vulnerability

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 e...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 23:53 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE describes a Cisco IOS defect affecting systems using a Policy Feature Card 3C during ICMPv6 ACL processing. The public record says the impact is unspecified, so business urgency depends on whether affected Cisco IOS versions and PFC3C hardware exist in your network. Exposure appears limited to Cisco IOS 12.0, 15.0, or 15.1 deployments using Policy Feature Card 3C and ICMPv6 ACL handling. The bundle does not provide precise CPEs or a complete affected product list. Treat this as a targeted legacy network exposure check, not a confirmed emergency. Escalate if affected Cisco IOS and PFC3C assets protect critical network paths or internet-facing IPv6 traffic. Mitigation focus: Check Cisco guidance for Bug ID CSCtj90091 and affected release notes.; Inventory Cisco IOS 12.0, 15.0, and 15.1 devices using PFC3C.; Review whether ICMPv6 ACLs are used on potentially affected devices..

Prepared: Jun 24, 2026, 12:52 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 2, 2012, 10:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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