CVE-2026-70341

HIGHPre-NVD 8.58.5—
EchelonGraph scoreHIGH confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-11. the CNA's CVSS baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.5Exploit: None knownExposed: 0

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

Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

CVSS v3
8.5
EG Score
8.5(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

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
Severity85% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 24, 2026

Advisory Details (1)

Auto-updated Sep 11, 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-2026-70341

Vendor Advisories for CVE-2026-70341(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.

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 38× in last 7d / 92× 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.

  1. 2026-09-25 02:45 UTCEG score recompute
  2. 2026-09-25 02:45 UTCVendor advisory
  3. 2026-09-25 02:45 UTCGHSA enrichment
  4. 2026-09-24 13:54 UTCEG score recompute
  5. 2026-09-24 13:54 UTCVendor advisory
  6. 2026-09-24 13:54 UTCGHSA enrichment
  7. 2026-09-24 08:24 UTCVendor advisory
  8. 2026-09-24 08:24 UTCGHSA enrichment
  9. 2026-09-23 19:33 UTCEG score recompute
  10. 2026-09-23 19:33 UTCVendor advisory
  11. 2026-09-23 19:33 UTCGHSA enrichment
  12. 2026-09-23 17:54 UTCEPSS rescore
  13. 2026-09-23 06:02 UTCVendor advisory
  14. 2026-09-23 06:02 UTCGHSA enrichment
  15. 2026-09-22 17:11 UTCEG score recompute
  16. 2026-09-22 17:11 UTCVendor advisory
  17. 2026-09-22 17:11 UTCGHSA enrichment
  18. 2026-09-22 04:08 UTCEG score recompute
  19. 2026-09-22 04:08 UTCVendor advisory
  20. 2026-09-22 04:08 UTCGHSA enrichment
  21. 2026-09-21 21:09 UTCEPSS rescore
  22. 2026-09-21 15:17 UTCVendor advisory
  23. 2026-09-21 15:17 UTCGHSA enrichment
  24. 2026-09-21 02:26 UTCEG score recompute
  25. 2026-09-21 02:26 UTCVendor advisory
Show 67 more
  1. 2026-09-21 02:26 UTCGHSA enrichment
  2. 2026-09-20 20:16 UTCEPSS rescore
  3. 2026-09-20 13:35 UTCVendor advisory
  4. 2026-09-20 13:35 UTCGHSA enrichment
  5. 2026-09-20 00:45 UTCEG score recompute
  6. 2026-09-20 00:45 UTCVendor advisory
  7. 2026-09-20 00:45 UTCGHSA enrichment
  8. 2026-09-19 11:54 UTCVendor advisory
  9. 2026-09-19 11:53 UTCGHSA enrichment
  10. 2026-09-18 23:00 UTCEG score recompute
  11. 2026-09-18 23:00 UTCVendor advisory
  12. 2026-09-18 23:00 UTCGHSA enrichment
  13. 2026-09-18 19:28 UTCEPSS rescore
  14. 2026-09-18 10:10 UTCVendor advisory
  15. 2026-09-18 10:10 UTCGHSA enrichment
  16. 2026-09-17 21:19 UTCEG score recompute
  17. 2026-09-17 21:19 UTCVendor advisory
  18. 2026-09-17 21:19 UTCGHSA enrichment
  19. 2026-09-17 08:28 UTCVendor advisory
  20. 2026-09-17 08:28 UTCGHSA enrichment
  21. 2026-09-16 19:37 UTCEG score recompute
  22. 2026-09-16 19:37 UTCVendor advisory
  23. 2026-09-16 19:37 UTCGHSA enrichment
  24. 2026-09-16 16:57 UTCEG score recompute
  25. 2026-09-16 16:57 UTCVendor advisory
  26. 2026-09-16 16:56 UTCGHSA enrichment
  27. 2026-09-16 14:08 UTCEPSS rescore
  28. 2026-09-16 08:50 UTCEG score recompute
  29. 2026-09-16 08:50 UTCVendor advisory
  30. 2026-09-16 08:50 UTCGHSA enrichment
  31. 2026-09-16 05:15 UTCEPSS rescore
  32. 2026-09-15 19:04 UTCVendor advisory
  33. 2026-09-15 19:04 UTCGHSA enrichment
  34. 2026-09-15 06:13 UTCEG score recompute
  35. 2026-09-15 06:13 UTCVendor advisory
  36. 2026-09-15 06:13 UTCGHSA enrichment
  37. 2026-09-15 03:12 UTCEPSS rescore
  38. 2026-09-14 17:21 UTCEG score recompute
  39. 2026-09-14 17:21 UTCVendor advisory
  40. 2026-09-14 17:21 UTCGHSA enrichment
  41. 2026-09-14 06:56 UTCVendor advisory
  42. 2026-09-14 06:56 UTCGHSA enrichment
  43. 2026-09-13 18:06 UTCEG score recompute
  44. 2026-09-13 18:06 UTCVendor advisory
  45. 2026-09-13 18:06 UTCGHSA enrichment
  46. 2026-09-13 05:15 UTCVendor advisory
  47. 2026-09-13 05:15 UTCGHSA enrichment
  48. 2026-09-12 16:24 UTCEG score recompute
  49. 2026-09-12 16:24 UTCVendor advisory
  50. 2026-09-12 16:24 UTCGHSA enrichment
  51. 2026-09-12 15:45 UTCEG score recompute
  52. 2026-09-12 15:45 UTCVendor advisory
  53. 2026-09-12 15:45 UTCGHSA enrichment
  54. 2026-09-12 15:02 UTCEPSS rescore
  55. 2026-09-12 04:20 UTCEG score recompute
  56. 2026-09-12 04:20 UTCVendor advisory
  57. 2026-09-12 04:20 UTCGHSA enrichment
  58. 2026-09-12 03:59 UTCEG score recompute
  59. 2026-09-12 03:59 UTCVendor advisory
  60. 2026-09-12 03:59 UTCGHSA enrichment
  61. 2026-09-11 16:59 UTCEG score recompute
  62. 2026-09-11 16:59 UTCVendor advisory
  63. 2026-09-11 16:30 UTCEG score recompute
  64. 2026-09-11 16:30 UTCVendor advisory
  65. 2026-09-11 15:55 UTCEG score recompute
  66. 2026-09-11 15:55 UTCVendor advisory
  67. 2026-09-11 15:54 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70341?
CVE-2026-70341 is a high vulnerability published on September 11, 2026. Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
When was CVE-2026-70341 disclosed?
CVE-2026-70341 was first published in the National Vulnerability Database on September 11, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70341 actively exploited?
CVE-2026-70341 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 50.5% of all scored CVEs.
What is the CVSS score of CVE-2026-70341?
CVE-2026-70341 has a CVSS v4.0 base score of 8.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-70341?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70341, 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

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