VULNERABILITY INTELLIGENCE

CVE-2015-4321

CVSS score5 MEDIUM
EPSS probability1.75%
CISA KEVNot currently listed
Published2015-08-20
Last modified2026-06-17
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N

Description

The Unicast Reverse Path Forwarding (uRPF) implementation in Cisco Adaptive Security Appliance (ASA) Software 9.3(1.50), 9.3(2.100), 9.3(3), and 9.4(1) mishandles cases where an IP address belongs to an internal interface but is also in the ASA routing table, which allows remote attackers to bypass uRPF validation via spoofed packets, aka Bug ID CSCuv60724.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references