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CVE-2025-20253

Cisco IOS Software - IKEv2

Cisco CVSS 8.6 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in the IKEv2 feature of Cisco IOS 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, which could be exploited by sending crafted IKEv2 packets to an affected device."

Operational Audit Arsenal

Target Type Firmware Image
Target Asset IKEv2 Module
Standard Path Global Firmware

Manual Verification Required

This is a non-Windows asset (Cisco). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

Network connectivity may be disrupted during the patching process

Internal Work Notes

CVE-2025-20253: Cisco IOS Software IKEv2 vulnerability could lead to DoS condition, requiring immediate patching to prevent remote exploitation

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Intelligence Sources

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Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.