CVE-2026-42973

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-09. the CNA's CVSS baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

June 9, 2026

Last Modified

August 25, 2026

Advisory Details (1)

Auto-updated Jun 16, 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-2026-42973

Vendor Advisories for CVE-2026-42973(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 9× in last 7d / 50× 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 262 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-42973?
CVE-2026-42973 is a medium vulnerability published on June 9, 2026. Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally.
When was CVE-2026-42973 disclosed?
CVE-2026-42973 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42973 actively exploited?
CVE-2026-42973 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 66.0% of all scored CVEs.
What is the CVSS score of CVE-2026-42973?
CVE-2026-42973 has a CVSS v4.0 base score of 5.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-42973?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42973, 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-2026-42973

Explore →

Is Your Infrastructure Affected by CVE-2026-42973?

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

Start Free Scan →Browse All CVEs