CVE-2022-20954

Arbitrary file overwrite via symbolic link

Published Oct 26, 2022 · Updated Oct 25, 2024

Arbitrary file overwrite in the CLI of Cisco RoomOS allows local users with Administrator access to replace files through a symbolic link. The CLI follows a symbolic link placed at a specific local filesystem location and writes to the link target without enforcing the target file's access controls. Administrator-level local access is required, and successful exploitation changes arbitrary files on the affected collaboration device.

CVSS severity4.4
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file overwrite in the CLI of Cisco RoomOS allows local users with Administrator access to replace files through a symbolic link. The CLI follows a symbolic link placed at a specific local filesystem location and writes to the link target without enforcing the target file's access controls. Administrator-level local access is required, and successful exploitation changes arbitrary files on the affected collaboration device.

The record

CVE
CVE-2022-20954
Published
Oct 26, 2022
Updated
Oct 25, 2024
Vendor
ClamAV
Product
Cisco RoomOS
Classifications
CWE-22, CWE-200, T1565.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 25, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

ClamAV · Cisco RoomOSversion=n/a

Published CVSS scores

4.4CiscoCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/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.

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No observations available

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

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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