CVE-2011-2059: n/a vulnerability

CVE-2011-2059: The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attack...

The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attacks and obtain potentially sensitive information about the presence of the IOS operating system via an ICMPv6 Echo Request packet containing a Hop-by-Hop (HBH) extension header (EH) with a 0x0c01050c value in the PadN option data, aka Bug ID CSCtq02219.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 04:03 UTC (UTC+00:00)

Security readout for executives and security teams

This issue lets a remote party distinguish Cisco IOS over IPv6 using a specially formed ICMPv6 probe. The cited material describes fingerprinting and possible exposure of system presence, not takeover, denial of service, or data theft. Business urgency is mainly inventory hygiene and reducing unnecessary network disclosure. Exposure is most likely on Cisco IOS devices running IPv6 on releases before 15.1(4)M1.3, especially where ICMPv6 can reach device interfaces. The source bundle does not identify specific platforms, feature sets, or deployment prerequisites beyond the IOS IPv6 component. Handle through normal network maintenance unless exposed edge infrastructure is known to run old IOS with IPv6 enabled. Prioritize internet-facing or partner-facing routers first. Lack of CVSS and KEV evidence lowers emergency priority, but legacy IOS exposure should still be removed. Mitigation focus: Inventory Cisco IOS devices with IPv6 enabled.; Upgrade affected IOS releases to 15.1(4)M1.3 or supported later guidance.; Check current Cisco advisory guidance for platform-specific recommendations..

Prepared: Jun 27, 2026, 17:48 UTC (UTC+00:00)

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

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 22, 2011, 01:00 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

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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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