Unrated severityNVD Advisory· Published Oct 22, 2011· Updated Jun 16, 2026
CVE-2011-2059
CVE-2011-2059
Description
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.
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Affected products
2cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*range: <15.1\(4\)m1.3
- (no CPE)range: <15.1(4)M1.3
Patches
Vulnerability mechanics
References
2- tools.cisco.com/security/center/viewIpsSignature.xnvdVendor Advisory
- blogs.cisco.com/security/1999tcp-redux-the-ipv6-flavornvdBroken Link
News mentions
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