CVE-2015-0646

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-03-26 · updated 2026-06-17
Weakness: CWE-399

Description

Memory leak in the TCP input module in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.3.xXO, 3.5.xE, 3.6.xE, 3.8.xS through 3.10.xS before 3.10.5S, and 3.11.xS and 3.12.xS before 3.12.3S allows remote attackers to cause a denial of service (memory consumption or device reload) by sending crafted TCP packets over (1) IPv4 or (2) IPv6, aka Bug ID CSCum94811.

Affected products

Cisco IOS: 12.2, 12.4, 15.0, 15.1, 15.2, 15.3 (+1)
Cisco IOS XE: 3.3xo.0, 3.3xo.1, 3.3xo.2, 3.5e.0, 3.5e.1, 3.5e.2 (+23)

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150325-tcpleak
http://www.securityfocus.com/bid/73340
http://www.securitytracker.com/id/1031980
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150325-tcpleak
http://www.securityfocus.com/bid/73340
http://www.securitytracker.com/id/1031980

Get alerted when CVE-2015-0646 or the next vulnerability affects your stack