CVE-2026-16801: Improper control of generation of code ('Code Injection') in the variables feature in Devolutions PowerShell U

Q: How do I fix CVE-2026-16801?

powershell universal: upgrade to 2026.2.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-16801 being exploited?

CVE-2026-16801 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-16801 affect?

CVE-2026-16801 affects powershell universal. Severity is high (CVSS 8.8). Improper control of generation of code ('Code Injection') in the variables feature in Devolutions PowerShell Universal 2026.2.2 and earlier allows an authenticated user with variable write permission to execute arbitrary PowerShell code via

This month

HIGH 8.8UPGRADE

CVE-2026-16801 is a high-severity flaw (CVSS 8.8) affecting powershell universal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper control of generation of code ('Code Injection') in the variables feature in Devolutions PowerShell Universal 2026.2.2 and earlier allows an authenticated user with variable write permission to execute arbitrary PowerShell code via a crafted variable value that is not properly escaped when written to the variables configuration file.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-07-24
Last modified	2026-10-24

Publisher (CNA): Devolutions Inc. · Vendor: devolutions

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-24 15:17 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

devolutions powershell universal UPGRADE

Affected: < 2026.2.3.0

Fixed in: 2026.2.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy powershell-universal || rpm -q powershell-universal || powershell-universal --version

2. UPGRADE to 2026.2.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade powershell-universal

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade powershell-universal

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · gnome-shell-extension-tiling-assistant · FIXED · 56-1.fc46 · FEDORA-2026-ebf66a5321 · source

sudo dnf upgrade --advisory=FEDORA-2026-ebf66a5321

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: devolutions.net/security/advisories/DEVO-2026-0025/

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-16801?

powershell universal: upgrade to 2026.2.3.0. Exact commands for each OS are on this page.

Is CVE-2026-16801 being exploited?

CVE-2026-16801 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-16801 affect?

CVE-2026-16801 affects powershell universal. Severity is high (CVSS 8.8). Improper control of generation of code ('Code Injection') in the variables feature in Devolutions PowerShell Universal 2026.2.2 and earlier allows an authenticated user with variable write permission to execute arbitrary PowerShell code via

How urgent is CVE-2026-16801?

Priority 42/100. High severity

Software pages

PowerShell vulnerabilities

Related CVEs

CVE-2026-16800 HIGH 8.8 UPGRADE Improper control of generation of code ('Code Injection') in the schedule feature in Devolutions PowerShell Un
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CVE-2026-16802 MEDIUM 6.5 UPGRADE Cleartext storage of sensitive information in the variables feature in Devolutions PowerShell Universal 2026.2
CVE-2026-16799 MEDIUM 5.0 UPGRADE Improper access control in the automation tests and workflows features in Devolutions PowerShell Universal 202

References

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