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CVE-2023-36424

Exploited in the wild. In CISA KEV since 2026‑04‑13. Fixed versions are out.

CVSS 3.17.8HighEPSS percentile96th12% chance in 30 daysCISA KEVListedsince 2026-04-13, due 2026-04-27
Public exploit: 1 sourceFix5 products10 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Microsoft Windows 11 version 22H3Affected: ≥ 10.0.22631.0, < 10.0.22631.2715Upgrade to: 10.0.22631.2715Affected: ≥ 10.0.0, < 10.0.22000.2600Upgrade to: 10.0.22000.2600Affected: ≥ 10.0.22621.0, < 10.0.22621.2715Upgrade to: 10.0.22621.2715Stated by: CVE record
  • Microsoft Windows Server 2022, 23H2 EditionAffected: ≥ 10.0.25398.0, < 10.0.25398.531Upgrade to: 10.0.25398.531Affected: ≥ 10.0.20348.0, < 10.0.20348.2113Upgrade to: 10.0.20348.2113Stated by: CVE record
  • Microsoft Windows 10 Version 1809Affected: ≥ 10.0.17763.0, < 10.0.17763.5122Upgrade to: 10.0.17763.5122Affected: ≥ 10.0.19043.0, < 10.0.19043.3693Upgrade to: 10.0.19043.3693Affected: ≥ 10.0.19045.0, < 10.0.19045.3693Upgrade to: 10.0.19045.3693Affected: ≥ 10.0.10240.0, < 10.0.10240.20308Upgrade to: 10.0.10240.20308 + 1 more branchStated by: CVE record
  • Microsoft Windows Server 2019Affected: ≥ 10.0.17763.0, < 10.0.17763.5122Upgrade to: 10.0.17763.5122Stated by: CVE record
  • Microsoft Windows Server 2016Affected: ≥ 10.0.14393.0, < 10.0.14393.6452Upgrade to: 10.0.14393.6452Stated by: CVE record

Versions as the sources state them. 4 more products have version data. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

Coverage timeline

0 publishers

  1. Added to CISA KEV catalog

    ·CISA KEV

Sourced from public security reporting — each date is when it was published, not when it happened.

What it is

From the CVE record

Windows Common Log File System Driver Elevation of Privilege Vulnerability

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS96th
Public exploit
CISA KEV
CISA KEV

Listed as exploited in the wild since 2026-04-13.

US federal agencies must remediate by 2026-04-27.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

12% chance of exploitation activity in the next 30 days, which ranks it in the 96th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

A public exploit existed 39 days before the patch.

  1. OpenVAS check added
  2. EPSS band changelow → moderate
  3. EPSS band changemoderate → low
  4. EPSS band changelow → moderate
  5. EPSS band changemoderate → low
  6. Patch availablerecord updated

Affected products

And 53 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Scored 7.8 by NVD.

How it is reached

  • Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 1 more reference. See all after sign-in

Watch the software you run.

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We'll flag the next CVE, public exploit or patch for Microsoft Corp, not every advisory. This one: actively exploited.