CVE-2023-28252

CRITICALNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-04-11), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 49%CVSS: 7.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · epss top5pct · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Windows Common Log File System Driver Elevation of Privilege Vulnerability

CVSS v3
7.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
49%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

April 11, 2023

Last Modified

October 28, 2025

Advisory Details (2)

Auto-updated Jun 4, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: microsoft, cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28252
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28252

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 68× in last 7d / 385× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 779 total refreshes for this CVE.

  1. 2026-07-28 04:05 UTCVendor advisory
  2. 2026-07-28 04:05 UTCGHSA enrichment
  3. 2026-07-28 00:14 UTCVendor advisory
  4. 2026-07-28 00:14 UTCGHSA enrichment
  5. 2026-07-27 20:23 UTCVendor advisory
  6. 2026-07-27 20:23 UTCGHSA enrichment
  7. 2026-07-27 19:24 UTCCISA KEV update
  8. 2026-07-27 17:17 UTCCISA KEV update
  9. 2026-07-27 16:31 UTCVendor advisory
  10. 2026-07-27 16:31 UTCGHSA enrichment
  11. 2026-07-27 12:40 UTCGHSA enrichment
  12. 2026-07-27 08:49 UTCVendor advisory
  13. 2026-07-27 08:49 UTCGHSA enrichment
  14. 2026-07-27 04:58 UTCVendor advisory
  15. 2026-07-27 04:58 UTCGHSA enrichment
  16. 2026-07-27 01:07 UTCVendor advisory
  17. 2026-07-27 01:07 UTCGHSA enrichment
  18. 2026-07-26 21:16 UTCVendor advisory
  19. 2026-07-26 21:16 UTCGHSA enrichment
  20. 2026-07-26 17:23 UTCEG score recompute
  21. 2026-07-26 17:23 UTCVendor advisory
  22. 2026-07-26 17:22 UTCGHSA enrichment
  23. 2026-07-26 14:52 UTCEPSS rescore
  24. 2026-07-26 14:52 UTCEPSS rescore
  25. 2026-07-26 13:31 UTCEG score recompute
Show 75 more
  1. 2026-07-26 13:31 UTCVendor advisory
  2. 2026-07-26 13:31 UTCGHSA enrichment
  3. 2026-07-26 09:40 UTCVendor advisory
  4. 2026-07-26 09:40 UTCGHSA enrichment
  5. 2026-07-26 05:49 UTCVendor advisory
  6. 2026-07-26 05:49 UTCGHSA enrichment
  7. 2026-07-26 01:57 UTCEG score recompute
  8. 2026-07-26 01:57 UTCVendor advisory
  9. 2026-07-26 01:57 UTCGHSA enrichment
  10. 2026-07-25 14:16 UTCEPSS rescore
  11. 2026-07-24 14:15 UTCEPSS rescore
  12. 2026-07-23 14:16 UTCEPSS rescore
  13. 2026-07-23 14:16 UTCEPSS rescore
  14. 2026-07-23 02:20 UTCEG score recompute
  15. 2026-07-22 22:55 UTCEG score recompute
  16. 2026-07-22 22:55 UTCVendor advisory
  17. 2026-07-22 22:55 UTCGHSA enrichment
  18. 2026-07-22 19:40 UTCCISA KEV update
  19. 2026-07-22 19:03 UTCGHSA enrichment
  20. 2026-07-22 15:11 UTCEG score recompute
  21. 2026-07-22 15:11 UTCVendor advisory
  22. 2026-07-22 15:11 UTCGHSA enrichment
  23. 2026-07-22 14:06 UTCEPSS rescore
  24. 2026-07-22 14:06 UTCEPSS rescore
  25. 2026-07-22 11:20 UTCVendor advisory
  26. 2026-07-22 11:20 UTCGHSA enrichment
  27. 2026-07-22 07:28 UTCVendor advisory
  28. 2026-07-22 07:28 UTCGHSA enrichment
  29. 2026-07-22 03:36 UTCVendor advisory
  30. 2026-07-22 03:36 UTCGHSA enrichment
  31. 2026-07-21 23:44 UTCVendor advisory
  32. 2026-07-21 23:44 UTCGHSA enrichment
  33. 2026-07-21 19:41 UTCVendor advisory
  34. 2026-07-21 19:41 UTCGHSA enrichment
  35. 2026-07-21 15:48 UTCEG score recompute
  36. 2026-07-21 15:48 UTCVendor advisory
  37. 2026-07-21 15:48 UTCGHSA enrichment
  38. 2026-07-21 15:23 UTCEPSS rescore
  39. 2026-07-21 14:37 UTCCISA KEV update
  40. 2026-07-21 11:57 UTCVendor advisory
  41. 2026-07-21 11:57 UTCGHSA enrichment
  42. 2026-07-21 08:03 UTCVendor advisory
  43. 2026-07-21 08:03 UTCGHSA enrichment
  44. 2026-07-21 04:13 UTCVendor advisory
  45. 2026-07-21 04:12 UTCGHSA enrichment
  46. 2026-07-21 00:21 UTCVendor advisory
  47. 2026-07-21 00:21 UTCGHSA enrichment
  48. 2026-07-20 20:30 UTCEG score recompute
  49. 2026-07-20 20:30 UTCVendor advisory
  50. 2026-07-20 20:30 UTCGHSA enrichment
  51. 2026-07-20 17:06 UTCEPSS rescore
  52. 2026-07-20 16:39 UTCGHSA enrichment
  53. 2026-07-20 12:48 UTCGHSA enrichment
  54. 2026-07-20 08:57 UTCVendor advisory
  55. 2026-07-20 08:57 UTCGHSA enrichment
  56. 2026-07-20 05:06 UTCVendor advisory
  57. 2026-07-20 05:05 UTCGHSA enrichment
  58. 2026-07-20 01:14 UTCVendor advisory
  59. 2026-07-20 01:14 UTCGHSA enrichment
  60. 2026-07-19 21:23 UTCVendor advisory
  61. 2026-07-19 21:23 UTCGHSA enrichment
  62. 2026-07-19 17:32 UTCEG score recompute
  63. 2026-07-19 17:32 UTCVendor advisory
  64. 2026-07-19 17:32 UTCGHSA enrichment
  65. 2026-07-19 14:29 UTCEPSS rescore
  66. 2026-07-19 14:29 UTCEPSS rescore
  67. 2026-07-19 13:41 UTCVendor advisory
  68. 2026-07-19 13:41 UTCGHSA enrichment
  69. 2026-07-19 09:50 UTCVendor advisory
  70. 2026-07-19 09:50 UTCGHSA enrichment
  71. 2026-07-19 05:59 UTCEG score recompute
  72. 2026-07-19 05:59 UTCVendor advisory
  73. 2026-07-19 05:59 UTCGHSA enrichment
  74. 2026-07-19 02:27 UTCEPSS rescore
  75. 2026-07-19 02:27 UTCEPSS rescore

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCbyt3n33dl3/CLFS
    First seen Mar 21, 2024

    it's a CVE-2023-28252 (Patched), but feel free to use it for check any outdated software or reseach

    Open source ↗
  • GitHub PoCduck-sec/CVE-2023-28252-Compiled-exe
    First seen Jan 22, 2024

    A modification to fortra's CVE-2023-28252 exploit, compiled to exe

    Open source ↗
  • GitHub PoCfortra/CVE-2023-28252
    First seen Jun 27, 2023
    Open source ↗
  • Metasploitexploit/windows/local/cve_2023_28252_clfs_driver✓ verified
    First seen Apr 11, 2023

    Windows Common Log File System Driver (clfs.sys) Elevation of Privilege Vulnerability

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2023-28252?
CVE-2023-28252 is a critical vulnerability published on April 11, 2023. Windows Common Log File System Driver Elevation of Privilege Vulnerability
When was CVE-2023-28252 disclosed?
CVE-2023-28252 was first published in the National Vulnerability Database on April 11, 2023, with the most recent update on October 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-28252 actively exploited?
Yes. CISA added CVE-2023-28252 to the Known Exploited Vulnerabilities catalog on April 11, 2023, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-28252?
CVE-2023-28252 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-28252?
CVE-2023-28252 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-28252?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-28252, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-28252

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