CVE-2026-4255: A DLL search order hijacking vulnerability in Thermalright TR-VISION HOME on Windows (64-bit) allows a local a

Q: How do I fix CVE-2026-4255?

tr-vision home: upgrade to newer than 2.0.5. Exact commands for each OS are on this page.

Q: Is CVE-2026-4255 being exploited?

CVE-2026-4255 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-2026-4255 affect?

CVE-2026-4255 affects tr-vision home. Severity is high (CVSS 7.8). A DLL search order hijacking vulnerability in Thermalright TR-VISION HOME on Windows (64-bit) allows a local attacker to escalate privileges via DLL side-loading. The application loads certain dynamic-link library (DLL) dependencies using t

Routine

HIGH 7.8UPGRADE

CVE-2026-4255 is a high-severity flaw (CVSS 7.8) affecting tr-vision home. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A DLL search order hijacking vulnerability in Thermalright TR-VISION HOME on Windows (64-bit) allows a local attacker to escalate privileges via DLL side-loading. The application loads certain dynamic-link library (DLL) dependencies using the default Windows search order, which includes directories that may be writable by non-privileged users.\n\n\n\nBecause these directories can be modified by unprivileged users, an attacker can place a maliciou

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-829
Published	2026-03-16
Last modified	2026-06-17

Publisher (CNA): Toreon · Vendor: thermalright

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-16 14:20 UTCPublished CVE record published
2026-06-17 10:56 UTCUpdated Record last modified

thermalright tr-vision home UPGRADE

Affected: <= 2.0.5

Fixed in: newer than 2.0.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tr-vision-home || rpm -q tr-vision-home || tr-vision-home --version

2. UPGRADE to newer than 2.0.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tr-vision-home

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tr-vision-home

Note

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

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-2026-4255?

tr-vision home: upgrade to newer than 2.0.5. Exact commands for each OS are on this page.

Is CVE-2026-4255 being exploited?

CVE-2026-4255 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-2026-4255 affect?

CVE-2026-4255 affects tr-vision home. Severity is high (CVSS 7.8). A DLL search order hijacking vulnerability in Thermalright TR-VISION HOME on Windows (64-bit) allows a local attacker to escalate privileges via DLL side-loading. The application loads certain dynamic-link library (DLL) dependencies using t

How urgent is CVE-2026-4255?

Priority 30/100. High severity

Software pages

Windows vulnerabilities

References

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