CVE-2002-2053

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2002-12-31 · updated 2026-06-16

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

Cisco IOS: 12.1

References

http://archives.neohapsis.com/archives/bugtraq/2002-06/0027.html
http://archives.neohapsis.com/archives/bugtraq/2002-06/0050.html
http://www.iss.net/security_center/static/9283.php
http://www.securityfocus.com/bid/4949
http://archives.neohapsis.com/archives/bugtraq/2002-06/0027.html
http://archives.neohapsis.com/archives/bugtraq/2002-06/0050.html
http://www.iss.net/security_center/static/9283.php
http://www.securityfocus.com/bid/4949

Get alerted when CVE-2002-2053 or the next vulnerability affects your stack