CVE-2025-50892: The eudskacs.sys driver version 20250328 shipped with EaseUs Todo Backup 1.2.0.1 fails to properly validate pr

Routine

HIGH 7.8DOWNGRADE

CVE-2025-50892 is a high-severity flaw (CVSS 7.8) affecting eudskacs.sys driver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The eudskacs.sys driver version 20250328 shipped with EaseUs Todo Backup 1.2.0.1 fails to properly validate privileges for I/O requests (IRP_MJ_READ/IRP_MJ_WRITE) sent to its device object. This allows a local, low-privileged attacker to perform arbitrary raw disk reads and writes, leading to sensitive information disclosure, denial of service, or local privilege escalation.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-269
Published	2025-09-10
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: easeus

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-10 18:15 UTCPublished CVE record published
2026-07-05 02:16 UTCUpdated Record last modified

easeus eudskacs.sys driver DOWNGRADE

Affected: 20250328

Fixed in: no fixed release known

Safe to downgrade to: a release before 20250328

1. Check installed version

apt-cache policy eudskacs.sys-driver || rpm -q eudskacs.sys-driver || eudskacs.sys-driver --version

2. No fixed release: DOWNGRADE to a release before 20250328 (Debian / Ubuntu)

apt-cache madison eudskacs.sys-driver sudo apt install eudskacs.sys-driver=<VERSION_BEFORE_20250328> sudo apt-mark hold eudskacs.sys-driver

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list eudskacs.sys-driver sudo dnf downgrade eudskacs.sys-driver-<VERSION_BEFORE_20250328> sudo dnf versionlock add eudskacs.sys-driver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-50892?

eudskacs.sys driver: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-50892 being exploited?

CVE-2025-50892 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-2025-50892 affect?

CVE-2025-50892 affects eudskacs.sys driver. Severity is high (CVSS 7.8). The eudskacs.sys driver version 20250328 shipped with EaseUs Todo Backup 1.2.0.1 fails to properly validate privileges for I/O requests (IRP_MJ_READ/IRP_MJ_WRITE) sent to its device object. This allows a local, low-privileged attacker to pe

How urgent is CVE-2025-50892?

Priority 28/100. High severity

References

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