CVE-2022-27152Public exploit

Arbitrary file modification via NFS symlink checks

Published Apr 8, 2022 · Updated Aug 3, 2024

Arbitrary file modification in RokuOS 9.4.0 build 4200 and earlier allows remote authenticated users to alter writable device files. The undocumented pkg_nfs_mount option mounts channel source over NFS, where a root-filesystem symlink bypasses ownership and permission checks. Exploitation requires local-network access, enabled Developer Settings, a sideloaded channel, and a device with a Realtek WiFi chip.

CVSS severity5.7
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file modification in RokuOS 9.4.0 build 4200 and earlier allows remote authenticated users to alter writable device files. The undocumented pkg_nfs_mount option mounts channel source over NFS, where a root-filesystem symlink bypasses ownership and permission checks. Exploitation requires local-network access, enabled Developer Settings, a sideloaded channel, and a device with a Realtek WiFi chip.

The record

CVE
CVE-2022-27152
Published
Apr 8, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.7NIST NVDAV:A/AC:L/Au:S/C:N/I:P/A:N
5.7NIST NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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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