What’s Vulnerable › Vulnerabilities

CVE-2002-1768

• 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

Cisco IOS 11.1 through 12.2, when HSRP support is not enabled, allows remote attackers to cause a denial of service (CPU consumption) via randomly sized UDP packets to the Hot Standby Routing Protocol (HSRP) port 1985.

Affected products

• Cisco IOS: 11.1, 11.2, 12.0, 12.1, 12.2

References

• http://archives.neohapsis.com/archives/bugtraq/2002-06/0027.html
• http://archives.neohapsis.com/archives/bugtraq/2002-06/0050.html
• http://www.securityfocus.com/bid/4948
• https://exchange.xforce.ibmcloud.com/vulnerabilities/9282
• http://archives.neohapsis.com/archives/bugtraq/2002-06/0027.html
• http://archives.neohapsis.com/archives/bugtraq/2002-06/0050.html
• http://www.securityfocus.com/bid/4948
• https://exchange.xforce.ibmcloud.com/vulnerabilities/9282

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