CVE-2011-4019

Severity: medium (CVSS 5.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-05-03 · updated 2026-06-16
Weakness: CWE-399

Description

Memory leak in Cisco IOS 12.4 and 15.0 through 15.2, and Cisco Unified Communications Manager (CUCM) 7.x, allows remote attackers to cause a denial of service (memory consumption) via a crafted response to a SIP SUBSCRIBE message, aka Bug IDs CSCto93837 and CSCtj61883.

Affected products

Cisco IOS: 12.4, 15.0, 15.1, 15.2
Cisco Unified Communications Manager: 7.0, 7.0(1), 7.0(1)su1, 7.0(1)su1a, 7.0(2), 7.0(2a) (+27)

References

http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151TCAVS.html
http://www.cisco.com/web/software/282074295/90289/cucm-readme-715bsu5.pdf
http://www.cisco.com/en/US/docs/ios/15_1/release/notes/151TCAVS.html
http://www.cisco.com/web/software/282074295/90289/cucm-readme-715bsu5.pdf

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