VIR Vulnerability Intelligence Relay

CVE-2013-5503

high
Published 2013-10-02 · Modified 2026-04-29
CVSS v3
—
CVSS v2
7.8
VIR risk
7.8

Description

The UDP process in Cisco IOS XR 4.3.1 does not free packet memory upon detecting full packet queues, which allows remote attackers to cause a denial of service (memory consumption) via UDP packets to listening ports, aka Bug ID CSCue69413.

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: psirt@cisco.com — http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20131002-iosxr

References

CWEs

CWE-399

Verify integrity in audit chain (admin only). AS-IS.