CVE-2023-36874
Windows Error Reporting Service Elevation of Privilege Vulnerability
- CVSS
- 7.8Highscored by the publisher (CNA)
- Exploited in the wild
- Yes, in CISA KEV since 11 Jul 2023CISA deadline for US federal agencies: 1 Aug 2023public exploit code
- EPSS
- 44.4%chance of exploitation in the next 30 daystop 2% of scored CVEsFIRST score of 11 Nov 2026
- Fix
- Patch availablesee the advisories in the references
- Published
- 11 Jul 2023analysed here 12 Nov 2026
Do first. Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. (CISA's required action for this KEV entry)
Summary
Triage
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
| Product | Affected versions | Vendor says fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1507 | >= 10.0.10240.0 and < 10.0.10240.20048Vendor says fixed in: not stated | |
| Microsoft Windows 10 Version 1607 | >= 10.0.14393.0 and < 10.0.14393.6085Vendor says fixed in: not stated | |
| Microsoft Windows 10 Version 1809 | >= 10.0.17763.0 and < 10.0.17763.4645>= 10.0.0 and < 10.0.17763.4645Vendor says fixed in: not stated | |
| Microsoft Windows 10 Version 21H2 | >= 10.0.19043.0 and < 10.0.19044.3208Vendor says fixed in: not stated | |
| Microsoft Windows 10 Version 22H2 | >= 10.0.19045.0 and < 10.0.19045.3208Vendor says fixed in: not stated | |
| Microsoft Windows 11 version 21H2 | >= 10.0.0 and < 10.0.22000.2176Vendor says fixed in: not stated | |
| Microsoft Windows 11 version 22H2 | >= 10.0.22621.0 and < 10.0.22621.1992Vendor says fixed in: not stated | |
| Microsoft Windows Server 2008 R2 Service Pack 1 | >= 6.1.7601.0 and < 6.1.7601.26623Vendor says fixed in: not stated | |
| Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) | >= 6.1.7601.0 and < 6.1.7601.26623Vendor says fixed in: not stated | |
| Microsoft Windows Server 2008 Service Pack 2 | >= 6.0.6003.0 and < 6.0.6003.22175Vendor says fixed in: not stated | |
| Microsoft Windows Server 2008 Service Pack 2 | >= 6.0.6003.0 and < 6.0.6003.22175Vendor says fixed in: not stated | |
| Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) | >= 6.0.6003.0 and < 6.0.6003.22175Vendor says fixed in: not stated | |
| Microsoft Windows Server 2012 | >= 6.2.9200.0 and < 6.2.9200.24374Vendor says fixed in: not stated | |
| Microsoft Windows Server 2012 R2 | >= 6.3.9600.0 and < 6.3.9600.21063Vendor says fixed in: not stated | |
| Microsoft Windows Server 2012 R2 (Server Core installation) | >= 6.3.9600.0 and < 6.3.9600.21063Vendor says fixed in: not stated | |
| Microsoft Windows Server 2012 (Server Core installation) | >= 6.2.9200.0 and < 6.2.9200.24374Vendor says fixed in: not stated | |
| Microsoft Windows Server 2016 | >= 10.0.14393.0 and < 10.0.14393.6085Vendor says fixed in: not stated | |
| Microsoft Windows Server 2016 (Server Core installation) | >= 10.0.14393.0 and < 10.0.14393.6085Vendor says fixed in: not stated | |
| Microsoft Windows Server 2019 | >= 10.0.17763.0 and < 10.0.17763.4645Vendor says fixed in: not stated | |
| Microsoft Windows Server 2019 (Server Core installation) | >= 10.0.17763.0 and < 10.0.17763.4645Vendor says fixed in: not stated | |
| Microsoft Windows Server 2022 | >= 10.0.20348.0 and < 10.0.20348.1850Vendor says fixed in: not stated |
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
Products named in our analysis
- microsoft:windows_10_1507
- microsoft:windows_10_1607
- microsoft:windows_10_1809
- microsoft:windows_10_21h2
- microsoft:windows_10_22h2
- microsoft:windows_11_21h2
- microsoft:windows_11_22h2
- microsoft:windows_server_2008
- microsoft:windows_server_2012
- microsoft:windows_server_2016
- microsoft:windows_server_2019
- microsoft:windows_server_2022
Fix and mitigation
WAF and other mitigations
Can a WAF block it? No. The attack needs local access to the machine, so a WAF is not on its path.
Also consider: patch
Based on the attack vector (local or physical access). We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Listed since 11 Jul 2023.
- CISA due date
- 1 Aug 2023, the remediation deadline for US federal agencies
- CISA required action
- Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- Public exploit code
- Yes: 1 Metasploit module · 5 GitHub proofs of concept
- CISA SSVC
- exploitation active, automatable no, technical impact totalAssessed by CISA 27 Jan 2025 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
Metasploit
- exploit/windows/local/win_error_cve_2023_36874exploit, rank excellent
GitHub proofs of concept
- Wh04m1001/CVE-2023-36874243 stars
- Octoberfest7/CVE-2023-36874_BOF205 stars
- d0rb/CVE-2023-3687479 stars
- crisprss/CVE-2023-368742 stars
and 1 more repositories
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
Timeline
- 11 Jul 2023Added to CISA KEV (exploited in the wild)
- 11 Jul 2023Published1 day later
- 1 Aug 2023CISA remediation due date (US federal agencies)20 days later
- 20 Aug 2023First public exploit or proof of concept19 days later
- 27 Jan 2025CISA SSVC assessment: exploitation active527 days (about 1 year) later
- 21 Oct 2025CVE record last updated267 days (about 9 months) later
- 12 Nov 2026Analysed by vulneraibility.com387 days (about 1 year) later
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Metric | Value | What it means |
|---|---|---|
| Attack vector | LocalLocal access required (shell, logged-in user). | Local access required (shell, logged-in user). |
| Attack complexity | LowRepeatable attack, no special conditions. | Repeatable attack, no special conditions. |
| Privileges required | LowThe attacker needs basic user privileges. | The attacker needs basic user privileges. |
| User interaction | NoneNo victim action needed. | No victim action needed. |
| Scope | UnchangedImpact stays within the vulnerable component. | Impact stays within the vulnerable component. |
| Confidentiality | HighTotal data disclosure possible. | Total data disclosure possible. |
| Integrity | HighComplete modification possible. | Complete modification possible. |
| Availability | HighFull outage possible. | Full outage possible. |
Common questions
Is CVE-2023-36874 being exploited?
Yes. CVE-2023-36874 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2023-36874?
CVE-2023-36874 is rated High with a CVSS score of 7.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2023-36874?
Yes. A fix has been recorded for CVE-2023-36874. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2023-36874 affect?
CVE-2023-36874 affects microsoft:windows_10_1507, microsoft:windows_10_1607, microsoft:windows_10_1809, microsoft:windows_10_21h2, and 8 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
3 references in the CVE record, grouped by the tags the record gives them.
Advisories (1)
- msrc.microsoft.com /update-guide/vulnerability/CVE-2023-36874
Other links (2)
- cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36874
- packetstormsecurity.com /files/174843/Microsoft-Error-Reporting-Local-Privilege-Elevation.html
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Metasploit Framework: exploit and scanner modules
- PoC-in-GitHub: GitHub repositories that claim a proof of concept
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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