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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.
March 27, 2009
April 23, 2026
See which npm, PyPI, Go, and Maven packages are affected by CVE-2009-0636
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.