CVE-2025-30397

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 2025-05-13), 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, 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: 27%CVSS: 7.5Exploit: cisa kev · ssvc active · epss top5pct · public exploitExposed: 0

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

Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.

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
27%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

May 13, 2025

Last Modified

October 27, 2025

Advisory Details (4)

Auto-updated Jun 6, 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-2025-30397
generic

CVE-2025-30397 - Type Confusion Vulnerability in Microsoft Scripting Engine - Mitigation Script - vsociety

https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-mitigation-script
generic

CVE-2025-30397 - Type Confusion Vulnerability in Microsoft Scripting Engine - Detection Script - vsociety

https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-detection-script
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-2025-30397

Vendor Advisories for CVE-2025-30397(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 101× in last 7d / 424× 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 1,523 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-52315
    First seen Jun 5, 2025

    Microsoft Windows Server 2025 JScript Engine - Remote Code Execution (RCE)

    Open source ↗
  • GitHub PoCmbanyamer/CVE-2025-30397---Windows-Server-2025-JScript-RCE-Use-After-Free-
    First seen May 31, 2025

    Remote Code Execution via Use-After-Free in JScript.dll (CVE-2025-30397)

    Open source ↗

Frequently asked(6)

What is CVE-2025-30397?
CVE-2025-30397 is a critical vulnerability published on May 13, 2025. Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.
When was CVE-2025-30397 disclosed?
CVE-2025-30397 was first published in the National Vulnerability Database on May 13, 2025, with the most recent update on October 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-30397 actively exploited?
Yes. CISA added CVE-2025-30397 to the Known Exploited Vulnerabilities catalog on May 13, 2025, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-30397?
CVE-2025-30397 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-2025-30397?
CVE-2025-30397 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-2025-30397?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-30397, 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-2025-30397

Explore →

Is Your Infrastructure Affected by CVE-2025-30397?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs