CVE-2026-59115: '.../...//' in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate priv

This month

CRITICAL 9.9WATCHLISTMITIGATE

CVE-2026-59115 is a critical-severity flaw (CVSS 9.9) affecting entra provisioning service. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

'.../...//' in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.

Why this priority

Critical severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-35
Published	2026-08-07
Last modified	2026-10-23

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-07 00:16 UTCPublished CVE record published
2026-10-23 21:10 UTCUpdated Record last modified

microsoft entra provisioning service MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy entra-provisioning-service || rpm -q entra-provisioning-service || entra-provisioning-service --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · pspp · FIXED · 2.1.3-2.fc46 · FEDORA-2026-0d6444911b · source

sudo dnf upgrade --advisory=FEDORA-2026-0d6444911b

Fedora ELN · barman · FIXED · 3.20.1-3.eln159 · FEDORA-2026-45ecf042c2 · source

sudo dnf upgrade --advisory=FEDORA-2026-45ecf042c2

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-59115?

entra provisioning service: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-59115 being exploited?

CVE-2026-59115 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-59115 affect?

CVE-2026-59115 affects entra provisioning service. Severity is critical (CVSS 9.9). '.../...//' in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.

How urgent is CVE-2026-59115?

Priority 55/100. Critical severity; On your watchlist

References

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