VULNERABILITY INTELLIGENCE

CVE-2013-5543

CVSS score7.8 HIGH
EPSS probability1.89%
CISA KEVNot currently listed
Published2013-10-31
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:C

Description

Cisco IOS XE 3.4 before 3.4.2S and 3.5 before 3.5.1S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) via malformed ICMP error packets associated with a (1) TCP or (2) UDP session that is under inspection by the Zone-Based Firewall (ZBFW) component, aka Bug ID CSCtt26470.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references