CVE-2026-70354

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.4% (27th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 11, 2026

Last Modified

September 29, 2026

Advisory Details (1)

Auto-updated Aug 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-2026-70354

Vendor Advisories for CVE-2026-70354(2)

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

Affected Packages

(3 across 1 ecosystem)
NuGet(3)
PackageVulnerable rangeFix by version rangeDependents
Microsoft.WindowsDesktop.App.Runtime.win-arm648.0.0 ... 8.0.8 (29 versions)
  • 10.0.0 up to 10.0.11: fixed in 10.0.11
  • 9.0.0 up to 9.0.19: fixed in 9.0.19
  • 8.0.0 up to 8.0.30: fixed in 8.0.30
—
Microsoft.WindowsDesktop.App.Runtime.win-x648.0.0 ... 8.0.8 (29 versions)
  • 10.0.0 up to 10.0.11: fixed in 10.0.11
  • 9.0.0 up to 9.0.19: fixed in 9.0.19
  • 8.0.0 up to 8.0.30: fixed in 8.0.30
—
Microsoft.WindowsDesktop.App.Runtime.win-x868.0.0 ... 8.0.8 (29 versions)
  • 10.0.0 up to 10.0.11: fixed in 10.0.11
  • 9.0.0 up to 9.0.19: fixed in 9.0.19
  • 8.0.0 up to 8.0.30: fixed in 8.0.30
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 102× 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 248 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-70354?
CVE-2026-70354 is a high vulnerability published on August 11, 2026. Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
When was CVE-2026-70354 disclosed?
CVE-2026-70354 was first published on August 11, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70354 actively exploited?
CVE-2026-70354 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70354?
CVE-2026-70354 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-70354?
A fix for CVE-2026-70354 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70354 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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