VULNERABILITY INTELLIGENCE

CVE-2013-5480

CVSS score7.8 HIGH
EPSS probability1.33%
CISA KEVNot currently listed
Published2013-09-27
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:C

Description

The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCuf28733.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references