Unrated severityNVD Advisory· Published Dec 31, 2002· Updated Jun 16, 2026
CVE-2002-2053
CVE-2002-2053
Description
The design of the Hot Standby Routing Protocol (HSRP), as implemented on Cisco IOS 12.1, when using IRPAS, allows remote attackers to cause a denial of service (CPU consumption) via a router with the same IP address as the interface on which HSRP is running, which causes a loop.
Affected products
2= 12.1+ 1 more
- (no CPE)range: = 12.1
- cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
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