CVE-2026-83681

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 5.5 from GitHub Security Advisory (severity: MODERATE) published 2026-10-13. The CNA's CVSS baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Elevated

Also known asEUVD-2026-99326 (ENISA EUVD) · GHSA-52h2-r8m2-r88f (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • Public exploit or proof-of-concept code is available
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.5Exploit: Public PoCExposed services: Not assessed

A fix is available — apply it.

Weak authentication in Microsoft PowerToys allows an authorized attacker to perform tampering locally.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
38th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 13, 2026

Last Modified

November 10, 2026

Advisory Details (1)

Auto-updated Oct 16, 2026
Patch available. Sources: microsoft.
Microsoft

Security Update Guide - Microsoft Security Response Center

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83681

Vendor Advisories for CVE-2026-83681(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 / 79× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 108 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 8 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:57 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  2. 2026-11-12 21:51 UTCEchelonGraph re-scored
  3. 2026-11-12 21:51 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub severity MODERATE · GitHub CVSS 5.5
  4. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  5. 2026-11-11 16:44 UTCEchelonGraph re-scored
  6. 2026-11-11 16:44 UTCVendor advisory
  7. 2026-11-11 16:44 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub severity MODERATE · GitHub CVSS 5.5
  8. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  9. 2026-11-11 16:25 UTCVendor advisory
  10. 2026-11-11 16:25 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub severity MODERATE · GitHub CVSS 5.5
  11. 2026-11-10 20:44 UTCEchelonGraph re-scored
  12. 2026-11-10 20:44 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub severity MODERATE · GitHub CVSS 5.5
  13. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  14. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  15. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  16. 2026-11-07 19:16 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub severity MODERATE · GitHub CVSS 5.5
  17. 2026-11-07 19:16 UTCEchelonGraph re-scored
  18. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  19. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  20. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  21. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  22. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  23. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  24. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  25. 2026-10-31 18:16 UTCVendor advisory
Show 75 more
  1. 2026-10-31 18:16 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  2. 2026-10-31 16:39 UTCEchelonGraph re-scored
  3. 2026-10-31 16:39 UTCVendor advisory
  4. 2026-10-31 16:39 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  5. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  6. 2026-10-30 19:29 UTCEchelonGraph re-scored
  7. 2026-10-30 19:29 UTCVendor advisory
  8. 2026-10-30 19:29 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  9. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  10. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  11. 2026-10-29 15:25 UTCVendor advisory
  12. 2026-10-29 15:24 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  13. 2026-10-28 18:54 UTCEchelonGraph re-scored
  14. 2026-10-28 18:54 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  15. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  16. 2026-10-27 21:39 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  17. 2026-10-27 20:50 UTCEchelonGraph re-scored
  18. 2026-10-27 20:50 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  19. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  20. 2026-10-26 20:48 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  21. 2026-10-26 19:50 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  22. 2026-10-26 18:52 UTCEchelonGraph re-scored
  23. 2026-10-26 18:51 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  24. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  25. 2026-10-25 19:07 UTCVendor advisory
  26. 2026-10-25 19:07 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  27. 2026-10-25 17:34 UTCEchelonGraph re-scored
  28. 2026-10-25 17:34 UTCVendor advisory
  29. 2026-10-25 17:34 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  30. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  31. 2026-10-25 13:56 UTCEchelonGraph re-scored
  32. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  33. 2026-10-23 22:46 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  34. 2026-10-23 18:06 UTCEchelonGraph re-scored
  35. 2026-10-23 18:06 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  36. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  37. 2026-10-22 22:25 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  38. 2026-10-22 21:55 UTCEchelonGraph re-scored
  39. 2026-10-22 21:55 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  40. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  41. 2026-10-22 16:02 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  42. 2026-10-21 21:23 UTCVendor advisory
  43. 2026-10-21 21:23 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  44. 2026-10-21 17:13 UTCEchelonGraph re-scored
  45. 2026-10-21 17:13 UTCVendor advisory
  46. 2026-10-21 17:13 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  47. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  48. 2026-10-20 22:24 UTCVendor advisory
  49. 2026-10-20 22:23 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  50. 2026-10-20 18:49 UTCEchelonGraph re-scored
  51. 2026-10-20 18:49 UTCVendor advisory
  52. 2026-10-20 18:49 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  53. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  54. 2026-10-20 00:16 UTCVendor advisory
  55. 2026-10-20 00:16 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  56. 2026-10-19 20:21 UTCEchelonGraph re-scored
  57. 2026-10-19 20:21 UTCVendor advisory
  58. 2026-10-19 20:21 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  59. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  60. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  61. 2026-10-18 03:07 UTCEchelonGraph re-scored
  62. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  63. 2026-10-16 23:46 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  64. 2026-10-16 21:47 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  65. 2026-10-16 21:01 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  66. 2026-10-16 18:08 UTCEchelonGraph re-scored
  67. 2026-10-16 18:08 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  68. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  69. 2026-10-16 13:35 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  70. 2026-10-15 23:21 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  71. 2026-10-15 21:49 UTCEchelonGraph re-scored
  72. 2026-10-15 21:49 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5
  73. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  74. 2026-10-14 17:41 UTCEchelonGraph re-scored
  75. 2026-10-14 17:40 UTCGHSA enrichmentGHSA-52h2-r8m2-r88f · GitHub CVSS 5.5

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 GitHub PoC). Defenders should treat patch urgency accordingly.

  • GitHub PoC2alf/CarbonBlue
    Published Oct 8, 2026

    Steal Clipboard, Keystrokes & Files Across Local Users on Windows ::: CVE-2026-83681

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-83681?
CVE-2026-83681 is a medium-severity vulnerability; its CVE record was published on October 13, 2026. Weak authentication in Microsoft PowerToys allows an authorized attacker to perform tampering locally.
When was CVE-2026-83681 made public?
CVE-2026-83681 was made public on October 13, 2026: that is the date its CVE record's CNA, Microsoft Corporation, gives for when the vulnerability was made public. The CVE record itself was published on October 13, 2026. EchelonGraph's copy of the record carries a last-modified date of November 10, 2026; the record at its source may have been updated since.
Is CVE-2026-83681 actively exploited?
CVE-2026-83681 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-83681?
CVE-2026-83681 has a CVSS base score of 5.5 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-83681?
A fix for CVE-2026-83681 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-83681 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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