What is CVE-2023-36424?

CVE-2023-36424 is Windows Common Log File System Driver Elevation of Privilege Vulnerability. The supplied enrichment data classifies it as Remote Code Exec mapped to CWE-125 CWE-125.

Which versions are affected?

Affected product and version evidence is listed in the product table above. Current public advisories should be checked for exact version scope before patch targeting is finalized.

Is there active exploitation?

Yes: CISA KEV signal present. If exploitation is not confirmed from current sources, teams should document that status and continue monitoring KEV, vendor, and telemetry updates.

Is there a public exploit?

3 public PoC repositories reported; 1 marked weaponized in current dataset. Public exploit or PoC availability should raise triage priority, especially for exposed or business-critical systems.

How can defenders detect it?

Start with EDR process telemetry, host service logs where available. Look for vulnerability-class behavior, product errors, suspicious authentication events, exploit probes, and abnormal process activity based only on evidence that applies to the affected product.

How should teams prioritize it?

Prioritize CVE-2023-36424 using CVSS 7.8, EPSS 12%, KEV status, public PoC status, and asset exposure. Internet-facing, privileged, or business-critical deployments should be handled first.

Are workarounds available?

The supplied mitigation guidance says to apply vendor patches and restrict external exposure until fixed. Fixed-version evidence is listed in the mitigation section above.

Which threat actors are linked publicly?

No public threat actor linkage is confirmed from current sources. Do not attribute exploitation to a threat actor unless the source evidence explicitly supports that linkage.

What should be done in the next 24 hours?

Identify exposed assets running affected vendor/product/version combinations. Treat as emergency remediation because CISA KEV status is present. Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class. Open remediation tickets with affected assets, owners, evidence status, and detection coverage so decisions are traceable.

CISA KEVhighRemote Code Execpublic exploit

CVE-2023-36424

CVE-2023-36424 — Windows Common Log File System Driver Elevation of Privilege Vulnerability

Q: Is it in CISA KEV?

Yes. The supplied enrichment data lists CVE-2023-36424 in CISA KEV with required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.. KEV status should be monitored because it can change after initial disclosure or after exploitation becomes publicly confirmed.

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Published Nov 14, 2023Updated Jun 17, 2026Sources: NVD, Microsoft (CNA), CISA, FIRST EPSS, GitHub, GitHub Security Advisory

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Confirmed

CISA KEV, listed Apr 13, 2026

EPSS

12%

ahead of 96% of scored CVEs

Affects

Microsoft

25 products listed

CVSS base

7.8

high · 2 sources

CISA SSVC assessment

Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.

CISA

Exploitation

Active

none · proof-of-concept · active

Automatable

can an attacker script all four kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

The vendor's own words where we have them.

Upgrade Windows 11 version 22H3 to a fixed release. Apply vendor patches per advisory and restrict external exposure of the affected component until patched.

CISA required action

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

Federal deadline Apr 27, 2026 — passed 122 days ago

First 24 hours

Ordered from the record's own fields — exposure first, because you cannot patch what you have not found.

Identify exposed assets running affected vendor/product/version combinations.
Treat as emergency remediation because CISA KEV status is present.
Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class.

Affected scope

Vendor, product and version as the advisories word them.

Vendor	Product	Versions	Status
Microsoft	Windows 11 version 22H3	10.0.22631.0 to < 10.0.22631.2715	Vulnerable
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	10.0.25398.0 to < 10.0.25398.531	Vulnerable
Microsoft	Windows 11 Version 23H2	10.0.22631.0 to < 10.0.22631.2715	Vulnerable
Microsoft	Windows 10 Version 1809	10.0.17763.0 to < 10.0.17763.5122	Vulnerable
Microsoft	Windows 10 Version 1809	10.0.0 to < 10.0.17763.5122	Vulnerable
Microsoft	Windows Server 2019	10.0.17763.0 to < 10.0.17763.5122	Vulnerable
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 to < 10.0.17763.5122	Vulnerable
Microsoft	Windows Server 2022	10.0.20348.0 to < 10.0.20348.2113	Vulnerable
Microsoft	Windows 11 version 21H2	10.0.0 to < 10.0.22000.2600	Vulnerable
Microsoft	Windows 10 Version 21H2	10.0.19043.0 to < 10.0.19043.3693	Vulnerable
Microsoft	Windows 11 version 22H2	10.0.22621.0 to < 10.0.22621.2715	Vulnerable
Microsoft	Windows 10 Version 22H2	10.0.19045.0 to < 10.0.19045.3693	Vulnerable

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Availability

High

Confidentiality

High

Integrity

High

Scope

Unchanged

Attack Complexity

Low

Attack Vector

Local

Privileges Req

Low

User Interaction

None

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Source
7.8	CVSS 3.1	high	1.8	5.9	Microsoft (CNA), NVD, GHSA
7.8	CVSS 3.1	high	—	—	Microsoft (CNA)

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

Weakness & attack patterns

CWE-125

Inferred from the weakness class — not observed against this CVE.

CAPEC-242 · Code InjectionCAPEC-35 · Leverage Executable Code in Non-Executable Files

CISA KEV details

CISA lists a CVE here once it has evidence of exploitation against real targets.

CISAThat month →

Listed

Apr 13, 2026

Federal deadline

Apr 27, 2026

passed 122 days ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a date to argue against.

Public exploit

Capability, not use: code existing is a different claim from anyone running it.

Repositories

1 of the 3 sampled are weaponized

Detection

Read off the CVSS vector and the weakness class. Starting points, not rules we have tested.

Monitor for scanner or exploit-pattern traffic after 3 public PoC repositories were reported.

EDR process telemetryhost service logs

Timeline

What happened to this CVE, newest first — with the readings a source repeats on a schedule counted underneath rather than listed.

2026
Added · CVSS 3.1 7.8 (AV:L)
Jun 17, 2026 · NVD
Added to CISA KEV catalog
Apr 13, 2026 · CISA
2023
Initial · CVE published
Nov 14, 2023 · NVD
Added · GHSA-5wf7-vwpm-xxwx published (high)
Nov 14, 2023 · GitHub Security Advisory

References

5 on the record

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36424
Patch, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36424
US Government Resource
nvd.nist.gov/vuln/detail/CVE-2023-36424
NVD, Vendor Advisory
github.com/advisories/GHSA-5wf7-vwpm-xxwx
Exploit, Third Party Advisory
msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-36424
Vendor Advisory

Elsewhere on this site

Microsoftevery CVE for this vendor
April 2026what else CISA listed
Remote Code Execsame class
CWE-125other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record1

What should defenders know first?

CVE-2023-36424 is Windows Common Log File System Driver Elevation of Privilege Vulnerability, a high vulnerability affecting Windows 11 version 22H3, Windows Server 2022, 23H2 Edition (Server Core installation), Windows 11 Version 23H2, Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 11 version 21H2, Windows 10 Version 21H2, Windows 11 version 22H2, Windows 10 Version 22H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) from Microsoft. The current evidence lists it in CISA KEV, and the exploit status is: Yes: CISA KEV signal present. Public exploit evidence is: 3 public PoC repositories reported; 1 marked weaponized in current dataset. The affected-version evidence is listed in the key facts and affected products tables. Defenders should first verify whether exposed or business-critical assets run those versions, then apply vendor patches or mitigations, restrict reachable attack surface, and preserve logs for detection review. CVSS 7.8 describes technical severity, while EPSS 12% helps estimate near-term exploit likelihood; neither replaces asset context. Unknown fields should remain explicit in tickets, and threat actor, IOC, victimology, or payload claims should not be added unless a cited source supports them. Monitor CISA KEV, vendor advisories, NVD changes, public PoC repositories, and internal telemetry for update triggers.