{"id":"CVE-2010-2840","url":"https://www.cyber-defence.io/tools/cve/CVE-2010-2840","generatedAt":"2026-10-27T18:33:08.590Z","title":"The Presence Engine (PE) service in Cisco Unified Presence 6.x before 6.0(7) and 7.x before 7.0(8) does not properly handle an erroneous Contact field in the header of a SIP SUBSCRIBE message, which allows remote attackers to cause a denial of service…","description":"The Presence Engine (PE) service in Cisco Unified Presence 6.x before 6.0(7) and 7.x before 7.0(8) does not properly handle an erroneous Contact field in the header of a SIP SUBSCRIBE message, which allows remote attackers to cause a denial of service (process failure) via a malformed message, aka Bug ID CSCtd39629.","published":"2010-08-26T21:00:02.000Z","lastModified":"2026-06-16T23:21:36.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"2.0","score":7.8,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C"},"cwe":["CWE-20"],"affected":["cisco/unified presence server"],"epss":{"score":0.0121,"percentile":0.6822,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b43909.shtml","tags":["Patch","Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"http://www.vupen.com/english/advisories/2010/2186","source":"psirt@cisco.com"},{"url":"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b43909.shtml","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2010/2186","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2010-2840","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}