CVE-2009-0636

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-03-27 · updated 2026-06-16

Description

Unspecified vulnerability in Cisco IOS 12.0 through 12.4, when SIP voice services are enabled, allows remote attackers to cause a denial of service (device crash) via a valid SIP message.

Affected products

Cisco IOS: 12.0, 12.0da, 12.0db, 12.0dc, 12.0s, 12.0sc (+304)

References

http://secunia.com/advisories/34438
http://securitytracker.com/id?1021902
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a904c0.shtml
http://www.securityfocus.com/bid/34243
http://www.vupen.com/english/advisories/2009/0851
https://exchange.xforce.ibmcloud.com/vulnerabilities/49421
http://secunia.com/advisories/34438
http://securitytracker.com/id?1021902
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a904c0.shtml
http://www.securityfocus.com/bid/34243

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