CVE-2025-4002

Boot interruption via unchecked null root-directory handle

Published Apr 28, 2025 · Updated Apr 28, 2025

NULL pointer dereference in RefindPlus 0.14.2.AB allows local users to interrupt boot processing through debug-log initialization. GetDebugLogFile assigns the EfiLibOpenRoot result to mRootDir, then calls mRootDir->Close without first checking for a null handle. Triggering the path can crash the boot manager during pre-boot log handling; no confidentiality or integrity impact is reported.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

NULL pointer dereference in RefindPlus 0.14.2.AB allows local users to interrupt boot processing through debug-log initialization. GetDebugLogFile assigns the EfiLibOpenRoot result to mRootDir, then calls mRootDir->Close without first checking for a null handle. Triggering the path can crash the boot manager during pre-boot log handling; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2025-4002
Published
Apr 28, 2025
Updated
Apr 28, 2025
Vendor
RefindPlusRepo
Product
RefindPlus
Classifications
CWE-404, CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.14.2.AB

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

RefindPlusRepo · RefindPlusversion=0.14.2.AB

Published CVSS scores

5.5VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5VulDBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.6VulDBAV:L/AC:L/Au:S/C:N/I:N/A:C
6.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
CWE-476NULL Pointer Dereference

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo