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Vulnerability record · CVE-2010-2840 · published 26 August 2010

CVE-2010-2840: Cisco unified presence server improper input validation vulnerability

Cisco · Unified Presence Server

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.

7.8 CVSS 2.0 High EPSS 1.2% · top 32.8% CWE-20 · Improper input validation
7.8CVSS 2.0 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b43909.shtml PatchVendor Advisory
http://www.vupen.com/english/advisories/2010/2186
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b43909.shtml PatchVendor Advisory
http://www.vupen.com/english/advisories/2010/2186

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2011-1643Cisco unified communications manager information exposure vulnerabilityCisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x, 7.x before 7.1(5b)su4, 8.0, and 8.5 before 8.5(1)su2 and Cisco Unified Pre…EPSS 1.9%7.8CVE-2013-1137Cisco unified presence server memory buffer overflow vulnerabilityCisco Unified Presence Server (CUPS) 8.6, 9.0, and 9.1 before 9.1.1 allows remote attackers to cause a denial of service (CPU consumption) via crafte…EPSS 2.3%7.8CVE-2010-2839Cisco unified presence server vulnerabilitySIPD in Cisco Unified Presence 6.x before 6.0(7) and 7.x before 7.0(8) allows remote attackers to cause a denial of service (stack memory corruption …EPSS 1.2%7.8CVE-2009-2874Cisco unified presence server vulnerabilityThe TimesTenD process in Cisco Unified Presence 1.x, 6.x before 6.0(6), and 7.x before 7.0(4) allows remote attackers to cause a denial of service (p…EPSS 3.8%7.8CVE-2008-1158Cisco unified presence improper input validation vulnerabilityThe Presence Engine (PE) service in Cisco Unified Presence before 6.0(1) allows remote attackers to cause a denial of service (core dump and service …EPSS 1.9%7.8CVE-2007-3775Cisco unified communications manager vulnerabilityUnspecified vulnerability in Cisco Unified Communications Manager (CUCM, formerly CallManager) and Unified Presence Server (CUPS) allows remote attac…EPSS 2.0%7.8CVE-2007-1834Cisco unified callmanager vulnerabilityCisco Unified CallManager (CUCM) 5.0 before 5.0(4a)SU1 and Cisco Unified Presence Server (CUPS) 1.0 before 1.0(3) allow remote attackers to cause a d…EPSS 1.9%7.8CVE-2007-1826Cisco unified callmanager vulnerabilityUnspecified vulnerability in the IPSec Manager Service for Cisco Unified CallManager (CUCM) 5.0 before 5.0(4a)SU1 and Cisco Unified Presence Server (…EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2010-2840), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.