CVE-2008-4963

Severity: high (CVSS 7.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-11-06 · updated 2026-06-16

Description

Unspecified vulnerability in the VLAN Trunking Protocol (VTP) implementation on Cisco IOS and CatOS, when the VTP operating mode is not transparent, allows remote attackers to cause a denial of service (device reload or hang) via a crafted VTP packet sent to a switch interface configured as a trunk port.

Affected products

Cisco Catos: all versions
Cisco IOS: all versions

References

http://osvdb.org/49601
http://secunia.com/advisories/32573
http://securitytracker.com/id?1021143
http://www.cisco.com/en/US/products/products_security_response09186a0080a231cf.html
http://www.securityfocus.com/bid/32120
http://www.securitytracker.com/id?1021144
https://exchange.xforce.ibmcloud.com/vulnerabilities/46346
http://osvdb.org/49601
http://secunia.com/advisories/32573
http://securitytracker.com/id?1021143
http://www.cisco.com/en/US/products/products_security_response09186a0080a231cf.html
http://www.securityfocus.com/bid/32120

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