CVE-2025-20253

CWE-835CWE-401 — Memory Leak4 documents4 sources
Severity
8.6HIGH
EPSS
0.0%
top 85.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco Cisco Adaptive Security Appliance (asa) SoftwareCisco Cisco Firepower Threat Defense Software
Timeline
PublishedAug 14

Description

A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is due to the improper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to cause an infinite loop that exhausts r…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

🔴Vulnerability Details

2
GHSA
GHSA-m842-hm2c-8xm2: A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and Secure FTD Software could allow an unau↗2025-08-14
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CVEList
Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability↗2025-08-14
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📋Vendor Advisories

1
Cisco
Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities↗2025-08-14
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CVE-2025-20253 (HIGH CVSS 8.6) | A vulnerability in the IKEv2 featur | cvebase.io