CVE-2009-0628

Severity: critical (CVSS 9.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-03-27 · updated 2026-06-16
Weakness: CWE-200

Description

Memory leak in the SSLVPN feature in Cisco IOS 12.3 through 12.4 allows remote attackers to cause a denial of service (memory consumption and device crash) by disconnecting an SSL session in an abnormal manner, leading to a Transmission Control Block (TCB) leak.

Affected products

Cisco Ios: 12.3, 12.3-b, 12.3-bc, 12.3-bw, 12.3-eu, 12.3-ja (+61)

References

http://secunia.com/advisories/34438
http://securitytracker.com/id?1021896
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90424.shtml
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml
http://www.securityfocus.com/bid/34239
http://www.vupen.com/english/advisories/2009/0851
https://exchange.xforce.ibmcloud.com/vulnerabilities/49427
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12092
http://secunia.com/advisories/34438
http://securitytracker.com/id?1021896
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90424.shtml
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml

Get alerted when CVE-2009-0628 or the next vulnerability affects your stack