CVE-2026-57100: Server-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized a

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CRITICAL 9.9WATCHLISTMITIGATE

CVE-2026-57100 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.

Server-side request forgery (ssrf) 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	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-07-02
Last modified	2026-10-25

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-02 23:16 UTCPublished CVE record published
2026-10-25 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 · mingw-qt5-qtwebkit · FIXED · 5.212.0-0.46.alpha4.fc46 · FEDORA-2026-46ae541c22 · source

sudo dnf upgrade --advisory=FEDORA-2026-46ae541c22

Fedora ELN · kdominate · FIXED · 26.08.2-2.eln159 · FEDORA-2026-b1d98239fd · source

sudo dnf upgrade --advisory=FEDORA-2026-b1d98239fd

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-2026-57100?

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

Is CVE-2026-57100 being exploited?

CVE-2026-57100 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-2026-57100 affect?

CVE-2026-57100 affects entra provisioning service. Severity is critical (CVSS 9.9). Server-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.

How urgent is CVE-2026-57100?

Priority 54/100. Critical severity; On your watchlist

Related CVEs

CVE-2026-59115 CRITICAL 9.9 MITIGATE '.../...//' in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate priv

References

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