CVE-2022-20794Network attack vector

User redirection via unvalidated destination URLs

Published May 4, 2022 · Updated Nov 6, 2024

Open redirect in the web engine of Cisco RoomOS before RoomOS May 2021 allows remote attackers to redirect users via crafted URLs. The web engine accepts an attacker-supplied redirection URL without sufficient input validation and uses it as the redirect destination. No authentication is required, but a user must follow the crafted link before the browser is sent to an attacker-controlled site.

CVSS severity4.7
Medium
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in the web engine of Cisco RoomOS before RoomOS May 2021 allows remote attackers to redirect users via crafted URLs. The web engine accepts an attacker-supplied redirection URL without sufficient input validation and uses it as the redirect destination. No authentication is required, but a user must follow the crafted link before the browser is sent to an attacker-controlled site.

The record

CVE
CVE-2022-20794
Published
May 4, 2022
Updated
Nov 6, 2024
Vendor
ClamAV
Product
Cisco RoomOS
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 4, 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 privilegesunauthenticated

What is affected?

ClamAV · Cisco RoomOSversion=n/a

Published CVSS scores

4.7Cisco Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
6.5Cisco CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

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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