CISCO-CVE-2025-20253

HIGH8.6

Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability

Published Aug 14, 2025

Modified 1 years ago

Affected Packages

Cisco IOS

CiscoIOS

Affected versions:

12.2(6)I115.0(2)EJ15.0(2)EJ115.0(2)EK15.0(2)EK115.0(2)EX15.0(2)EX115.0(2)EX1015.0(2)EX1115.0(2)EX12+556 more

Cisco IOS XE

CiscoIOSXE

Affected versions:

17.12.4a17.12.4b17.12.517.12.5a17.15.317.17.117.6.1y17.9.73.10.0E3.10.0cE+81 more

CVSS Analysis

CVSS v3.1

8.6

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

ChangedS:C

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

8.6/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Upstream

Ecosystems

Timeline

PublishedAug 14, 2025

ModifiedAug 14, 2025