CVE-2023-36884

CRITICALNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-07-17), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, 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: 99%CVSS: 7.5Exploit: cisa kev · ssvc active · kev ransomware · epss top5pct · epss high · public exploitExposed: 0

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

Windows Search Remote Code Execution Vulnerability

CVSS v3
7.5
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
99%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

July 11, 2023

Last Modified

August 10, 2026

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-2023-36884
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-2023-36884

Weakness Classification(1)

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 95× in last 7d / 395× 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 1,300 total refreshes for this CVE.

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

Publicly available exploits

(5 references)

Working exploit code is in the public domain (5 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCjakabakos/CVE-2023-36884-MS-Office-HTML-RCE
    First seen Sep 28, 2023

    MS Office and Windows HTML RCE (CVE-2023-36884) - PoC and exploit

    Open source ↗
  • GitHub PoCridsoliveira/Fix-CVE-2023-36884
    First seen Jul 28, 2023
    Open source ↗
  • GitHub PoCtarraschk/CVE-2023-36884-Checker
    First seen Jul 17, 2023

    Script to check for CVE-2023-36884 hardening

    Open source ↗
  • GitHub PoCzerosorai/CVE-2023-36884
    First seen Jul 15, 2023

    This is an emergency solution while Microsoft addresses the vulnerability.

    Open source ↗
  • GitHub PoCMaxwitat/CVE-2023-36884-Scripts-for-Intune-Remediation-SCCM-Compliance-Baseline
    First seen Jul 12, 2023

    The remediation script should set the reg entries described in https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36884 . The detection script checks if they exist. Provided AS-IS without any warrenty.

    Open source ↗

Frequently asked(6)

What is CVE-2023-36884?
CVE-2023-36884 is a critical vulnerability published on July 11, 2023. Windows Search Remote Code Execution Vulnerability
When was CVE-2023-36884 disclosed?
CVE-2023-36884 was first published in the National Vulnerability Database on July 11, 2023, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-36884 actively exploited?
Yes. CISA added CVE-2023-36884 to the Known Exploited Vulnerabilities catalog on July 17, 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-2023-36884?
CVE-2023-36884 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-36884?
CVE-2023-36884 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-2023-36884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-36884, 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-2023-36884

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