CVE-2026-66325

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-08-04. The CNA's CVSS baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100CISA SSVC

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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
30th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 3, 2026

Last Modified

September 25, 2026

Advisory Details (1)

Auto-updated Aug 3, 2026
Patch available. Sources: microsoft.
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-2026-66325

Vendor Advisories for CVE-2026-66325(2)

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 18× in last 7d / 98× 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 247 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66325?
CVE-2026-66325 is a medium vulnerability published on August 3, 2026. Server-side request forgery (ssrf) in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
When was CVE-2026-66325 disclosed?
CVE-2026-66325 was first published on August 3, 2026, with the most recent update on September 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66325 actively exploited?
CVE-2026-66325 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-66325?
CVE-2026-66325 has a CVSS base score of 6.1 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-66325?
A fix for CVE-2026-66325 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-66325 are linked in the Vendor Advisories panel on this page.

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