CVE-2011-3288

Name: CVE-2011-3288
Creator: NVD / NIST
Published: 2011-10-06T10:55:05.097+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.77%

Last modified Jun 16, 2026

CVE-2011-3288 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.77% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.77%

75.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-776

Affected Software

Vendor	Product	Versions
Cisco	Unified Presence	< 8.5\(4\)

References

http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d47.shtmlNot Applicable
https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-20110928-xcpcupsxml.htmlVendor Advisory
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d47.shtmlNot Applicable

Timeline

Published: Oct 6, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-3288?

How severe is CVE-2011-3288?

CVE-2011-3288 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.77% probability of exploitation in the next 30 days.

How do I fix CVE-2011-3288?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-3288?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST