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VulnerabilityCVE-2026-83944Published 2026-09-17

CVE-2026-83944 — Microsoft Azure Logic Apps

critical

As of 2026-09-19, CVE-2026-83944 is a CRITICAL-severity vulnerability in Microsoft Azure Logic Apps, CVSS v3.1 10, EPSS 0.4% (38.5th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-83944, most recently “Microsoft September 2026 Cloud Disclosure: 18 Elevation-of-Privilege, Information-Disclosure, and Spoofing Flaws Across Azure and Copilot AI Products, Plus a Windows Secure Kernel EoP (CVE-2026-85921)”.

CVSS v3.1
10/10Critical
EPSS
0.4%Higher than 38.5% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
6.5/10Threadlinqs triage score
Published
Updated 2026-09-19
CVSS v3.1 10 (CRITICAL) · EPSS 0.4% (higher than 38.5% of all scored CVEs) · Priority 6.5/10 · Published 2026-09-17

Last updated:

What is CVE-2026-83944?

Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.

The record classifies CVE-2026-83944 under weakness class CWE-284. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 52 days ago.

Severity and exploitation probability

CVSS v3.1 base score
10 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
EPSS (FIRST)
0.4% probability of exploitation in the next 30 days, higher than 38.5% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
6.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-09-17, last modified 2026-09-19

Is CVE-2026-83944 being exploited?

It currently carries a trending score of 39 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-83944

Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83944. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2026-83944

1 tracked threat in the Threadlinqs corpus references CVE-2026-83944, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch