CVE-2026-85878 Azure Database for PostgreSQL Elevation of Privilege Vulnerability
An authorized attacker can elevate privileges in Azure Database for PostgreSQL due to improper authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-85878?
CVE-2026-85878 is a critical vulnerability in Microsoft Azure HorizonDB, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.
Weakness: CWE-285
Which versions are affected by CVE-2026-85878?
It affects 1 product.
Products include Microsoft Azure Horizondb.
How do I fix CVE-2026-85878?
No fix has been published for CVE-2026-85878 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-85878 being exploited?
There is no known exploitation of CVE-2026-85878 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Azure HorizonDB
Sources
Also known as GHSA-9vgx-8238-xgwc.