CVE-2015-4200

high
Published 2015-06-23 · Modified 2026-05-06
CVSS v3
CVSS v2
7.8
VIR risk
7.8

Description

Memory leak in the IPv6-to-IPv4 functionality in Cisco IOS 15.3S in the Performance Routing Engine (PRE) module on UBR devices allows remote attackers to cause a denial of service (memory consumption) by triggering an error during CPE negotiation, aka Bug ID CSCug00885.

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/viewAlert.x?alertId=39424

References

CWEs

CWE-399

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