CVE-2026-83943: Microsoft Azure API Center

Azure API Center Information Disclosure Vulnerability

CVSS 8.7 HighEPSS 0.0054 · 46th percentile

Published by the CVE Program (CNA: microsoft) at 8 Oct 2026, 22:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Microsoft	Azure API Center	affected -

Identifiers

CVE-2026-83943

CNA

microsoft

Weakness (CWE)

CWE-200

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Azure API Center contains an information disclosure vulnerability caused by exposure of sensitive information to an unauthorized actor. An unauthorized attacker with network access can exploit it to view sensitive information. The source gives few details and does not list affected versions or a fix.

Written 11 Nov 2026.

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C	CNA (microsoft)

CISA KEV Not listed.
EPSS 0.0054, the 46th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

8 Oct 2026, 22:15 UTC Confirmed by the CVE List
8 Oct 2026, 23:17 UTC Confirmed by NVD
31 Oct 2026, 16:31 UTC First seen by agentprime

Sources

References from the CNA

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83943 vendor-advisorypatch

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.