CVE-2002-2053

CVE-2002-2053 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

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.

Frequently asked questions

What is CVE-2002-2053?
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.
How severe is CVE-2002-2053?
CVE-2002-2053 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2002-2053 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-2053?
CVE-2002-2053 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-2053?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2002-2053 published?
CVE-2002-2053 was published on 2002-12-31 and last updated on 2026-06-16.

References

Affected products (1)

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