CVE-2025-20222

EUVD-2025-24847
A vulnerability in the RADIUS proxy feature for the IPsec VPN feature of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

This vulnerability is due to improper processing of IPv6 packets. An attacker could exploit this vulnerability by sending IPv6 packets over an IPsec VPN connection to an affected device. A successful exploit could allow the attacker to trigger a reload of the device, resulting in a DoS condition.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
ciscoCNA
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
ciscofirepower_threat_defense
6.2.3
CNA
ciscofirepower_threat_defense
6.2.3.9
CNA
ciscofirepower_threat_defense
6.2.3.1
CNA
ciscofirepower_threat_defense
6.2.3.2
CNA
ciscofirepower_threat_defense
6.2.3.10
CNA
ciscofirepower_threat_defense
6.4.0
CNA
ciscofirepower_threat_defense
6.4.0.3
CNA
ciscofirepower_threat_defense
6.4.0.4
CNA
ciscofirepower_threat_defense
6.2.3.15
CNA
ciscofirepower_threat_defense
6.2.3.6
CNA
ciscofirepower_threat_defense
6.2.3.7
CNA
ciscofirepower_threat_defense
6.2.3.12
CNA
ciscofirepower_threat_defense
6.2.3.3
CNA
ciscofirepower_threat_defense
6.2.3.11
CNA
ciscofirepower_threat_defense
6.4.0.6
CNA
ciscofirepower_threat_defense
6.2.3.13
CNA
ciscofirepower_threat_defense
6.2.3.8
CNA
ciscofirepower_threat_defense
6.2.3.4
CNA
ciscofirepower_threat_defense
6.4.0.1
CNA
ciscofirepower_threat_defense
6.2.3.5
CNA
ciscofirepower_threat_defense
6.4.0.5
CNA
ciscofirepower_threat_defense
6.2.3.14
CNA
ciscofirepower_threat_defense
6.4.0.2
CNA
ciscofirepower_threat_defense
6.4.0.8
CNA
ciscofirepower_threat_defense
6.4.0.7
CNA
ciscofirepower_threat_defense
6.6.0
CNA
ciscofirepower_threat_defense
6.4.0.9
CNA
ciscofirepower_threat_defense
6.2.3.16
CNA
ciscofirepower_threat_defense
6.6.0.1
CNA
ciscofirepower_threat_defense
6.6.1
CNA
ciscofirepower_threat_defense
6.4.0.10
CNA
ciscofirepower_threat_defense
6.4.0.11
CNA
ciscofirepower_threat_defense
6.6.3
CNA
ciscofirepower_threat_defense
6.6.4
CNA
ciscofirepower_threat_defense
6.4.0.12
CNA
ciscofirepower_threat_defense
7.0.0
CNA
ciscofirepower_threat_defense
6.2.3.17
CNA
ciscofirepower_threat_defense
7.0.0.1
CNA
ciscofirepower_threat_defense
6.6.5
CNA
ciscofirepower_threat_defense
7.0.1
CNA
ciscofirepower_threat_defense
7.1.0
CNA
ciscofirepower_threat_defense
6.4.0.13
CNA
ciscofirepower_threat_defense
6.6.5.1
CNA
ciscofirepower_threat_defense
6.2.3.18
CNA
ciscofirepower_threat_defense
7.0.1.1
CNA
ciscofirepower_threat_defense
6.4.0.14
CNA
ciscofirepower_threat_defense
7.1.0.1
CNA
ciscofirepower_threat_defense
6.6.5.2
CNA
ciscofirepower_threat_defense
7.0.2
CNA
ciscofirepower_threat_defense
6.4.0.15
CNA
ciscofirepower_threat_defense
7.2.0
CNA
ciscofirepower_threat_defense
7.0.2.1
CNA
ciscofirepower_threat_defense
7.0.3
CNA
ciscofirepower_threat_defense
6.6.7
CNA
ciscofirepower_threat_defense
7.2.0.1
CNA
ciscofirepower_threat_defense
7.0.4
CNA
ciscofirepower_threat_defense
7.2.1
CNA
ciscofirepower_threat_defense
7.0.5
CNA
ciscofirepower_threat_defense
6.4.0.16
CNA
ciscofirepower_threat_defense
7.3.0
CNA
ciscofirepower_threat_defense
7.2.2
CNA
ciscofirepower_threat_defense
6.6.7.1
CNA
ciscofirepower_threat_defense
7.2.3
CNA
ciscofirepower_threat_defense
7.3.1
CNA
ciscofirepower_threat_defense
7.1.0.3
CNA
ciscofirepower_threat_defense
7.2.4
CNA
ciscofirepower_threat_defense
7.0.6
CNA
ciscofirepower_threat_defense
7.2.5
CNA
ciscofirepower_threat_defense
7.2.4.1
CNA
ciscofirepower_threat_defense
7.3.1.1
CNA
ciscofirepower_threat_defense
6.4.0.17
CNA
ciscofirepower_threat_defense
7.0.6.1
CNA
ciscofirepower_threat_defense
7.2.5.1
CNA
ciscofirepower_threat_defense
7.4.1
CNA
ciscofirepower_threat_defense
7.2.6
CNA
ciscofirepower_threat_defense
7.0.6.2
CNA
ciscofirepower_threat_defense
7.4.1.1
CNA
ciscofirepower_threat_defense
6.6.7.2
CNA
ciscofirepower_threat_defense
6.4.0.18
CNA
ciscofirepower_threat_defense
7.2.7
CNA
ciscofirepower_threat_defense
7.2.5.2
CNA
ciscofirepower_threat_defense
7.3.1.2
CNA
ciscofirepower_threat_defense
7.2.8
CNA
ciscofirepower_threat_defense
7.4.2
CNA
ciscofirepower_threat_defense
7.2.8.1
CNA
ciscofirepower_threat_defense
7.0.6.3
CNA
ciscofirepower_threat_defense
7.4.2.1
CNA
ciscofirepower_threat_defense
7.2.9
CNA