CVE-2022-20851Network attack vector

Root command execution via web UI API

Published Sep 30, 2022 · Updated Nov 1, 2024

Command injection in Cisco IOS XE Software with the web UI enabled allows remote authenticated users to execute root commands via its API. The web UI API insufficiently validates crafted input before passing it into an operating-system command, but Cisco has not disclosed the affected parameter or code locus. Administrator privileges and an enabled HTTP or HTTPS server are required, and successful exploitation grants root-level command execution.

CVSS severity5.5
Medium
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Cisco IOS XE Software with the web UI enabled allows remote authenticated users to execute root commands via its API. The web UI API insufficiently validates crafted input before passing it into an operating-system command, but Cisco has not disclosed the affected parameter or code locus. Administrator privileges and an enabled HTTP or HTTPS server are required, and successful exploitation grants root-level command execution.

The record

CVE
CVE-2022-20851
Published
Sep 30, 2022
Updated
Nov 1, 2024
Vendor
ClamAV
Product
Cisco IOS XE Software
Classifications
CWE-77, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ClamAV · Cisco IOS XE Softwareversion=n/a

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
5.5CiscoCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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