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Vulnerability record · CVE-2011-3288 · published 6 October 2011

CVE-2011-3288: Cisco unified presence vulnerability

Cisco · Unified Presence

Cisco Unified Presence before 8.5(4) does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption, and process crash) via a crafted XML document containing a large number of nested entity references, aka Bug IDs CSCtq89842 and CSCtq88547, a similar issue to CVE-2003-1564.

7.5 CVSS 3.1 High EPSS 1.8% · top 22.8% CWE-776 · CWE-776
7.5CVSS 3.1 base score, v2 7.8
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
16 Jun 2026Last modified by NVD

Description

Cisco Unified Presence before 8.5(4) does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption, and process crash) via a crafted XML document containing a large number of nested entity references, aka Bug IDs CSCtq89842 and CSCtq88547, a similar issue to CVE-2003-1564.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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_advisory09186a0080b95d47.shtml Not Applicable
https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-20110928-xcpcupsxml.html Vendor Advisory
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d47.shtml Not Applicable

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Related vulnerabilities

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

10.0CVE-2008-1154Cisco emergency responder improper authentication vulnerabilityThe Disaster Recovery Framework (DRF) master server in Cisco Unified Communications products, including Unified Communications Manager (CUCM) 5.x and…EPSS 5.1%7.8CVE-2013-3453Cisco unified communications manager vulnerabilityMemory leak in Cisco Unified Communications Manager IM and Presence Service before 8.6(5)SU1 and 9.x before 9.1(2), and Cisco Unified Presence, allow…EPSS 1.9%7.8CVE-2012-3935Cisco unified presence memory buffer overflow vulnerabilityCisco Unified Presence (CUP) before 8.6(3) and Jabber Extensible Communications Platform (aka Jabber XCP) before 5.3 allow remote attackers to cause …EPSS 2.8%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-2008-1740Cisco 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-2008-1741Cisco unified presence improper input validation vulnerabilityThe SIP Proxy (SIPD) service in Cisco Unified Presence before 6.0(3) allows remote attackers to cause a denial of service (core dump and service inte…EPSS 1.9%6.8CVE-2013-1197Cisco unified presence improper input validation vulnerabilityThe XML parser in the server in Cisco Unified Presence (CUP) allows remote authenticated users to cause a denial of service (jabberd daemon crash) vi…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2011-3288), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.