CVE-2026-62918

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. The CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
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: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 6, 2026

Last Modified

September 29, 2026

Advisory Details (1)

Auto-updated Aug 7, 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-2026-62918

Vendor Advisories for CVE-2026-62918(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 27× in last 7d / 140× 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 387 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-62918?
CVE-2026-62918 is a high vulnerability published on August 6, 2026. Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.
When was CVE-2026-62918 disclosed?
CVE-2026-62918 was first published on August 6, 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-2026-62918 actively exploited?
CVE-2026-62918 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-62918?
CVE-2026-62918 has a CVSS base score of 7.5 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-62918?
A fix for CVE-2026-62918 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-62918 are linked in the Vendor Advisories panel on this page.

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