What is CVE-2022-20692?

CVE-2022-20692 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Uncontrolled Resource Consumption. CVSS score: 7.7/10. Published 2022-04-15.

How severe is CVE-2022-20692?

High severity. CVSS v3 base score is 7.7 out of 10.

Resource exhaustion in Cisco iOS Xe Software

CVE-2022-20692

A vulnerability in the NETCONF over SSH feature of Cisco IOS XE Software could allow a low-privileged, authenticated, remote attacker to cause a denial of service condition (DoS) on an affected device. This vulnerability is due to insufficient resource management. An attacker could exploit this vulnerability by initiating a large number of NETCONF over SSH connections. A successful exploit could allow the attacker to exhaust resources, causing the device to reload and resulting in a DoS condition on an affected device.

Vulnerability class: DoS (Denial of Service)

Published 2022-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000

Affected products

Cisco iOS Xe Software
Cisco iOS Xe — versions 3.15.1xbs, 3.15.2xbs, 16.3.1

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncossh-d… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2022-20692?: CVE-2022-20692 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Uncontrolled Resource Consumption. CVSS score: 7.7/10. Published 2022-04-15.
How severe is CVE-2022-20692?: High severity. CVSS v3 base score is 7.7 out of 10.