CVE-2022-20781Network attack vector

Stored XSS via unvalidated management-interface field

Published Apr 6, 2022 · Updated Nov 6, 2024

Stored XSS in Cisco AsyncOS for Secure Web Appliance 14.1 and earlier allows remote authenticated users to run scripts in the management interface. The web interface stores malicious data from an unspecified field without properly validating it, then executes the injected script when another user views the affected interface. Exploitation requires authenticated access and user interaction, and the script runs in the affected interface security context, enabling data access or modification within that context.

CVSS severity5.4
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Cisco AsyncOS for Secure Web Appliance 14.1 and earlier allows remote authenticated users to run scripts in the management interface. The web interface stores malicious data from an unspecified field without properly validating it, then executes the injected script when another user views the affected interface. Exploitation requires authenticated access and user interaction, and the script runs in the affected interface security context, enabling data access or modification within that context.

The record

CVE
CVE-2022-20781
Published
Apr 6, 2022
Updated
Nov 6, 2024
Vendor
ClamAV
Product
Cisco Secure Web Appliance
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 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 privilegesauthenticated

What is affected?

ClamAV · Cisco Secure Web Applianceversion=n/a

Published CVSS scores

5.4Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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