How severe is CVE-2011-3287?

CVE-2011-3287 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-3287 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3287?

CVE-2011-3287 primarily affects Cisco Jabber Extensible Communications Platform. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3287?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-3287 published?

CVE-2011-3287 was published on 2011-10-06 and last updated on 2026-06-16.

CVE-2011-3287

CVE-2011-3287 is a high-severity vulnerability in Cisco Jabber Extensible Communications Platform with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Jabber Extensible Communications Platform
Published: 2011-10-06
Last modified: 2026-06-16

Description

Cisco Jabber Extensible Communications Platform (aka Jabber XCP) 2.x through 5.4.x before 5.4.0.27581 and 5.8.x before 5.8.1.27561 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 ID CSCtq78106, a similar issue to CVE-2003-1564.

Frequently asked questions

What is CVE-2011-3287?: Cisco Jabber Extensible Communications Platform (aka Jabber XCP) 2.x through 5.4.x before 5.4.0.27581 and 5.8.x before 5.8.1.27561 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 ID CSCtq78106, a similar issue to CVE-2003-1564.
How severe is CVE-2011-3287?: CVE-2011-3287 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-3287 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3287?: CVE-2011-3287 primarily affects Cisco Jabber Extensible Communications Platform. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3287?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-3287 published?: CVE-2011-3287 was published on 2011-10-06 and last updated on 2026-06-16.

References

http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d47.shtml

Affected products (4)

cpe:2.3:a:cisco:jabber_extensible_communications_platform:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:jabber_extensible_communications_platform:5.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:jabber_extensible_communications_platform:5.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:jabber_extensible_communications_platform:5.2:*:*:*:*:*:*:*

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