CVE-2013-5546

Severity: high (CVSS 7.8 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: 2013-10-31 · updated 2026-06-16
Weakness: CWE-20

Description

The TCP reassembly feature in Cisco IOS XE 3.7 before 3.7.3S and 3.8 before 3.8.1S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) via large TCP packets that are processed by the (1) NAT or (2) ALG component, aka Bug ID CSCud72509.

Affected products

Cisco Asr 1001: all versions
Cisco Asr 1002: all versions
Cisco Asr 1002-X: all versions
Cisco Asr 1004: all versions
Cisco Asr 1006: all versions
Cisco Asr 1023 Router: all versions
Cisco IOS XE: 3.7.0s, 3.7.1s, 3.7.2s, 3.8.0s

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20131030-asr1000
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20131030-asr1000

Get alerted when CVE-2013-5546 or the next vulnerability affects your stack