CVE-2022-50927Public exploit

Root shell via unrestricted sudo binary replacement

Published Jan 13, 2026 · Updated Jan 13, 2026

Local privilege escalation in Vertiv Cyclades ACS Advanced Console Server 1.0.0 through 3.3.0 allows local users to gain root access. The default /etc/sudoers configuration lets the admin user and admin-group members run privileged file-movement and execution utilities without command restrictions. An authenticated appliance shell and admin-group membership are required; replacing /bin/sed with /bin/bash and invoking it through sudo opens a root shell.

CVSS severity8.5
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in Vertiv Cyclades ACS Advanced Console Server 1.0.0 through 3.3.0 allows local users to gain root access. The default /etc/sudoers configuration lets the admin user and admin-group members run privileged file-movement and execution utilities without command restrictions. An authenticated appliance shell and admin-group membership are required; replacing /bin/sed with /bin/bash and invoking it through sudo opens a root shell.

The record

CVE
CVE-2022-50927
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Vertiv
Product
Cyclades ACS Advanced Console Server
Classifications
CWE-266, T1548.003
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record 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=1.0.0 - 3.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Vertiv · Cyclades ACS Advanced Console Serverversion=1.0.0 - 3.3.0

Published CVSS scores

8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
6.2VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1548.003Sudo and Sudo Caching

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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