Unrated severityNVD Advisory· Published May 2, 2012· Updated Apr 29, 2026
CVE-2012-0339
CVE-2012-0339
Description
Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client, aka Bug ID CSCsi77774.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.0:*:*:*:*:*:*:*
- (no CPE)range: >=12.2,<=12.4,=15.0
Patches
Vulnerability mechanics
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References
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