CVE-2026-47644

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 48% 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 — 4 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: 1%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 in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

June 4, 2026

Last Modified

August 25, 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-2026-47644

Vendor Advisories for CVE-2026-47644(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 14× in last 7d / 110× 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 263 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-47644?
CVE-2026-47644 is a high vulnerability published on June 4, 2026. Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.
When was CVE-2026-47644 disclosed?
CVE-2026-47644 was first published in the National Vulnerability Database on June 4, 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-2026-47644 actively exploited?
CVE-2026-47644 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 48.2% of all scored CVEs.
What is the CVSS score of CVE-2026-47644?
CVE-2026-47644 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-47644?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47644, 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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