CVE-2026-42824

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 7.6%, top 6% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 5 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8%CVSS: 7.5Exploit: None knownExposed: 0

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

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity75% × 45%
Exploitation8% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
94%
KEV
Not listed

Published

June 4, 2026

Last Modified

July 28, 2026

Advisory Details (1)

Auto-updated Jun 12, 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-2026-42824

Vendor Advisories for CVE-2026-42824(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 19× in last 7d / 64× 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 142 total refreshes for this CVE.

  1. 2026-07-28 23:03 UTCEG score recompute
  2. 2026-07-28 23:03 UTCVendor advisory
  3. 2026-07-28 23:02 UTCGHSA enrichment
  4. 2026-07-28 15:36 UTCEPSS rescore
  5. 2026-07-28 03:19 UTCVendor advisory
  6. 2026-07-28 03:19 UTCGHSA enrichment
  7. 2026-07-27 11:12 UTCGHSA enrichment
  8. 2026-07-26 22:13 UTCEG score recompute
  9. 2026-07-26 22:13 UTCVendor advisory
  10. 2026-07-26 22:13 UTCGHSA enrichment
  11. 2026-07-26 07:35 UTCEG score recompute▲ 1.00
  12. 2026-07-26 07:35 UTCVendor advisory
  13. 2026-07-26 07:35 UTCGHSA enrichment
  14. 2026-07-25 14:18 UTCEPSS rescore
  15. 2026-07-24 14:17 UTCEPSS rescore
  16. 2026-07-23 14:18 UTCEPSS rescore
  17. 2026-07-23 07:50 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  18. 2026-07-23 03:11 UTCEG score recompute
  19. 2026-07-22 14:08 UTCEPSS rescore
  20. 2026-07-21 15:24 UTCEPSS rescore
  21. 2026-07-20 17:08 UTCEPSS rescore
  22. 2026-07-19 14:31 UTCEPSS rescore
  23. 2026-07-19 02:29 UTCEPSS rescore
  24. 2026-07-18 10:04 UTCEPSS rescore
  25. 2026-07-16 17:03 UTCEPSS rescore
Show 75 more
  1. 2026-07-16 00:15 UTCVendor advisory
  2. 2026-07-16 00:15 UTCGHSA enrichment
  3. 2026-07-15 20:34 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-14 03:20 UTCVendor advisory
  7. 2026-07-14 03:20 UTCGHSA enrichment
  8. 2026-07-13 22:30 UTCEPSS rescore
  9. 2026-07-12 05:46 UTCEPSS rescore
  10. 2026-07-11 11:44 UTCVendor advisory
  11. 2026-07-11 11:44 UTCGHSA enrichment
  12. 2026-07-11 08:27 UTCEPSS rescore
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-09 00:54 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  15. 2026-07-08 15:16 UTCEPSS rescore
  16. 2026-07-08 09:28 UTCVendor advisory
  17. 2026-07-08 09:28 UTCGHSA enrichment
  18. 2026-07-07 13:46 UTCEPSS rescore
  19. 2026-07-06 16:27 UTCEPSS rescore
  20. 2026-07-06 16:27 UTCEPSS rescore
  21. 2026-07-06 02:23 UTCEPSS rescore
  22. 2026-07-06 02:23 UTCEPSS rescore
  23. 2026-07-06 02:17 UTCVendor advisory
  24. 2026-07-06 02:17 UTCGHSA enrichment
  25. 2026-07-05 02:30 UTCEPSS rescore
  26. 2026-07-04 06:31 UTCEPSS rescore
  27. 2026-07-03 21:34 UTCVendor advisory
  28. 2026-07-03 21:34 UTCGHSA enrichment
  29. 2026-07-02 21:03 UTCVendor advisory
  30. 2026-07-02 21:03 UTCGHSA enrichment
  31. 2026-07-01 20:31 UTCVendor advisory
  32. 2026-07-01 20:30 UTCGHSA enrichment
  33. 2026-07-01 15:06 UTCEPSS rescore
  34. 2026-06-30 23:22 UTCEPSS rescore
  35. 2026-06-30 20:04 UTCVendor advisory
  36. 2026-06-30 20:04 UTCGHSA enrichment
  37. 2026-06-29 14:06 UTCEPSS rescore
  38. 2026-06-29 09:57 UTCVendor advisory
  39. 2026-06-29 09:57 UTCGHSA enrichment
  40. 2026-06-28 04:56 UTCEPSS rescore
  41. 2026-06-28 04:14 UTCVendor advisory
  42. 2026-06-28 04:14 UTCGHSA enrichment
  43. 2026-06-27 04:42 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  44. 2026-06-27 03:44 UTCVendor advisory
  45. 2026-06-27 03:44 UTCGHSA enrichment
  46. 2026-06-27 03:08 UTCEPSS rescore
  47. 2026-06-26 03:15 UTCVendor advisory
  48. 2026-06-26 03:15 UTCGHSA enrichment
  49. 2026-06-25 13:49 UTCEPSS rescore
  50. 2026-06-25 13:49 UTCEPSS rescore
  51. 2026-06-25 02:48 UTCVendor advisory
  52. 2026-06-25 02:48 UTCGHSA enrichment
  53. 2026-06-24 14:05 UTCEPSS rescore
  54. 2026-06-24 02:20 UTCVendor advisory
  55. 2026-06-24 02:20 UTCGHSA enrichment
  56. 2026-06-23 21:33 UTCEPSS rescore
  57. 2026-06-23 01:52 UTCVendor advisory
  58. 2026-06-23 01:52 UTCGHSA enrichment
  59. 2026-06-22 14:25 UTCEPSS rescore
  60. 2026-06-22 14:25 UTCEPSS rescore
  61. 2026-06-21 14:56 UTCEPSS rescore
  62. 2026-06-21 14:56 UTCEPSS rescore
  63. 2026-06-21 01:59 UTCEPSS rescore
  64. 2026-06-20 12:08 UTCVendor advisory
  65. 2026-06-20 12:08 UTCGHSA enrichment
  66. 2026-06-19 21:37 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  67. 2026-06-19 19:25 UTCEPSS rescore
  68. 2026-06-19 06:26 UTCVendor advisory
  69. 2026-06-19 06:25 UTCGHSA enrichment
  70. 2026-06-18 17:52 UTCEPSS rescore
  71. 2026-06-18 17:52 UTCEPSS rescore
  72. 2026-06-18 04:46 UTCVendor advisory
  73. 2026-06-18 04:46 UTCGHSA enrichment
  74. 2026-06-17 17:53 UTCEPSS rescore
  75. 2026-06-17 04:10 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-42824?
CVE-2026-42824 is a high vulnerability published on June 4, 2026. Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.
When was CVE-2026-42824 disclosed?
CVE-2026-42824 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42824 actively exploited?
CVE-2026-42824 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8% probability of exploitation in the next 30 days, which ranks it in the top 6.1% of all scored CVEs.
What is the CVSS score of CVE-2026-42824?
CVE-2026-42824 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-42824?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42824, 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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