CVE-2026-42822

CRITICALPre-NVD 10.010.0
EchelonGraph scoreMEDIUM confidence

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

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-18. The CNA's CVSS baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 4 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 10.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges over a network.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
60
EG Risk 60/100

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 (value × EchelonGraph’s weight)
Severity100% × 45%
The EG Score, 10.0 of 10.
Exploitation0.9% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.9%
EPSS %ILE
58th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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 total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

May 18, 2026

Last Modified

August 10, 2026

Advisory Details (1)

Auto-updated Oct 13, 2026
Patch available. Sources: microsoft.
Microsoft

Security Update Guide - Microsoft Security Response Center

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42822

Vendor Advisories for CVE-2026-42822(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 18× in last 7d / 32× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 100 of 503 refreshes 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 403 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 11:32 UTCEG score recompute
  2. 2026-10-14 11:31 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  4. 2026-10-13 09:42 UTCEG score recompute
  5. 2026-10-13 09:42 UTCVendor advisory
  6. 2026-10-13 09:42 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  7. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  8. 2026-10-12 16:07 UTCEG score recompute
  9. 2026-10-12 07:56 UTCVendor advisory
  10. 2026-10-12 07:56 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  11. 2026-10-11 19:48 UTCEG score recompute
  12. 2026-10-11 17:03 UTCEG score recompute
  13. 2026-10-11 14:29 UTCEG score recompute
  14. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  17. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  19. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  22. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
Show 75 more
  1. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  2. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  3. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  4. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  5. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  7. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  13. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  24. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-08-23 21:32 UTCVendor advisory
  26. 2026-08-23 21:32 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  27. 2026-08-23 17:13 UTCEG score recompute
  28. 2026-08-23 17:13 UTCVendor advisory
  29. 2026-08-23 17:13 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  30. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  31. 2026-08-21 23:53 UTCEG score recompute
  32. 2026-08-21 23:53 UTCVendor advisory
  33. 2026-08-21 23:53 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  34. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  35. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  36. 2026-08-20 19:09 UTCEG score recompute
  37. 2026-08-20 19:09 UTCVendor advisory
  38. 2026-08-20 19:09 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  39. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  40. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  41. 2026-08-17 14:40 UTCEG score recompute
  42. 2026-08-17 14:40 UTCVendor advisory
  43. 2026-08-17 14:40 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  45. 2026-08-17 10:06 UTCEG score recompute
  46. 2026-08-17 10:06 UTCVendor advisory
  47. 2026-08-17 10:06 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  48. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  49. 2026-08-16 11:57 UTCVendor advisory
  50. 2026-08-16 11:57 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  51. 2026-08-16 07:49 UTCVendor advisory
  52. 2026-08-16 07:49 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  53. 2026-08-16 03:39 UTCEG score recompute
  54. 2026-08-16 03:39 UTCVendor advisory
  55. 2026-08-16 03:39 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  56. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  57. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  58. 2026-08-14 22:52 UTCVendor advisory
  59. 2026-08-14 22:52 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  60. 2026-08-14 18:44 UTCVendor advisory
  61. 2026-08-14 18:44 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  62. 2026-08-14 14:36 UTCVendor advisory
  63. 2026-08-14 14:36 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  64. 2026-08-14 10:28 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  65. 2026-08-14 06:20 UTCVendor advisory
  66. 2026-08-14 06:20 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  67. 2026-08-14 02:12 UTCEG score recompute
  68. 2026-08-14 02:12 UTCVendor advisory
  69. 2026-08-14 02:11 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  70. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  71. 2026-08-13 08:14 UTCVendor advisory
  72. 2026-08-13 08:14 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  73. 2026-08-13 03:04 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  74. 2026-08-12 22:56 UTCGHSA enrichmentGHSA-5ffh-v4jr-f65h · GitHub severity CRITICAL · GitHub CVSS 10.0
  75. 2026-08-12 18:48 UTCVendor advisory

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42822?
CVE-2026-42822 is a critical-severity vulnerability; its CVE record was published on May 18, 2026. Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges over a network.
When was CVE-2026-42822 made public?
CVE-2026-42822 was made public on May 18, 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 May 18, 2026. EchelonGraph's copy of the record carries a last-modified date of August 10, 2026; the record at its source may have been updated since.
Is CVE-2026-42822 actively exploited?
CVE-2026-42822 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (58th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-42822?
CVE-2026-42822 has a CVSS base score of 10.0 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-42822?
A fix for CVE-2026-42822 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-42822 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-42822

Explore →

Is Your Infrastructure Affected by CVE-2026-42822?

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

Book a Demo →Browse All CVEs