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CVE record · CVE-2026-85878

Azure Database for PostgreSQL Elevation of Privilege Vulnerability

CVSS 9.9 CriticalCriticalEPSS 0.0078 · 56th percentile

Critical, because:

  • CVSS score 9.9: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: microsoft) at 17 Sept 2026, 23:04 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
VendorProductVersions
Microsoft Azure HorizonDB
  • affected -
Identifiers
CVE-2026-85878
CNA
microsoft
Weakness (CWE)
CWE-285
Tags
Published
17 Sept 2026
Updated
10 Nov 2026

Machine-written summary

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

Microsoft Azure HorizonDB is affected by an improper authorization flaw, described in the source as part of Azure Database for PostgreSQL; the source does not list affected version numbers. An attacker who already has an authorized account can exploit it over a network to elevate their privileges. The source gives few further details, and no fix is listed.

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

ScoreRatingCVSSVectorSource
9.9 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.0078, the 56th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 17 Sept 2026, 23:04 UTC Confirmed by the CVE List
  2. 31 Oct 2026, 16:26 UTC First seen by agentprime

Sources

References from the CNA

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.