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CVE-2022-20920

Cisco IOS Software - SSH Implementation

Cisco CVSS 7.7 Updated May 29, 2026

Executive Risk Summary

"A vulnerability in the SSH implementation of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to improper handling of resources during an exceptional situation."

Anticipated Attack Path

  1. 1. Attacker establishes an SSH connection to the affected device
  2. 2. Attacker sends specific SSH requests to exploit the vulnerability
  3. 3. Affected device reloads due to improper handling of resources

Am I Vulnerable?

  • Verify Cisco IOS Software version
  • Check for SSH implementation vulnerabilities
  • Apply patch or workaround to prevent exploitation

Operational Audit Arsenal

Target Type Process
Target Asset ssh
Standard Path /usr/sbin/ssh

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 interrupted during the patching process

Internal Work Notes

CVE-2022-20920: SSH Implementation Vulnerability in Cisco IOS Software - Requesting patch application and verification

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Intelligence Sources

Related Cisco Threats

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