VULNERABILITY INTELLIGENCE
CVE-2009-2051
CVSS score7.8 HIGH
EPSS probability3.44%
CISA KEVNot currently listed
Published2009-08-27
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:C
Description
Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), and 7.x before 7.1(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a malformed SIP INVITE message that triggers an improper call to the sipSafeStrlen function, aka Bug IDs CSCsz40392 and CSCsz43987.
Primary references
- psirt@cisco.com — Broken Link
- psirt@cisco.com — Third Party Advisory
- psirt@cisco.com — Third Party Advisory
- psirt@cisco.com — Patch, Vendor Advisory
- psirt@cisco.com — Vendor Advisory
- psirt@cisco.com — Third Party Advisory, VDB Entry
- psirt@cisco.com — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory