CVE-2026-69843: Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges ov

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CRITICAL 10.0REMOTEWATCHLISTMITIGATE

CVE-2026-69843 is a critical-severity flaw (CVSS 10.0) affecting fabric. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-290
Published	2026-09-18
Last modified	2026-09-25

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-09-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-18 00:17 UTCPublished CVE record published
2026-09-25 19:53 UTCUpdated Record last modified

microsoft fabric 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 fabric || rpm -q fabric || fabric --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 · fio · FIXED · 3.43-2.fc46 · FEDORA-2026-b36219886b · source

sudo dnf upgrade --advisory=FEDORA-2026-b36219886b

Fedora ELN · weston · FIXED · 16.0.2-1.eln159 · FEDORA-2026-b98ccaa6a0 · source

sudo dnf upgrade --advisory=FEDORA-2026-b98ccaa6a0

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-2026-69843?

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

Is CVE-2026-69843 being exploited?

CVE-2026-69843 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-2026-69843 affect?

CVE-2026-69843 affects fabric. Severity is critical (CVSS 10.0). Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.

How urgent is CVE-2026-69843?

Priority 63/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

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CVE-2026-63509 CRITICAL 9.9 MITIGATE Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network
CVE-2026-70178 HIGH 8.5 MITIGATE Missing authorization in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.

References

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