CVE-2026-59118: Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.

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CRITICAL 9.3WATCHLISTMITIGATE

CVE-2026-59118 is a critical-severity flaw (CVSS 9.3) affecting power apps. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper authorization in Copilot Cowork allows an unauthorized 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	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-285
Published	2026-08-07
Last modified	2026-10-24

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-24 · 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
2026-10-24 16:10 UTCUpdated Record last modified

microsoft power apps 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 power-apps || rpm -q power-apps || power-apps --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 · python-openslide · FIXED · 1.4.7-1.fc46 · FEDORA-2026-336bea884e · source

sudo dnf upgrade --advisory=FEDORA-2026-336bea884e

Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source

sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15

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-2026-59118?

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

Is CVE-2026-59118 being exploited?

CVE-2026-59118 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-2026-59118 affect?

CVE-2026-59118 affects power apps. Severity is critical (CVSS 9.3). Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.

How urgent is CVE-2026-59118?

Priority 51/100. Critical severity; On your watchlist

References

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