CVE-2026-24303: Improper certificate validation in Microsoft Partner Center allows an unauthorized attacker to elevate privile

This month

CRITICAL 9.6WATCHLISTMITIGATE

CVE-2026-24303 is a critical-severity flaw (CVSS 9.6) affecting partner center. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper certificate validation in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.

Why this priority

Critical severity
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-04-23
Last modified	2026-10-26

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-23 22:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

microsoft partner center 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 partner-center || rpm -q partner-center || partner-center --version

No fixed or unaffected release known

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

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-2026-24303?

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

Is CVE-2026-24303 being exploited?

CVE-2026-24303 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-2026-24303 affect?

CVE-2026-24303 affects partner center. Severity is critical (CVSS 9.6). Improper certificate validation in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.

How urgent is CVE-2026-24303?

Priority 47/100. Critical severity; On your watchlist

Related CVEs

CVE-2026-34327 HIGH 8.2 MITIGATE Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthor
CVE-2026-69558 HIGH 8.6 MITIGATE Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker t
CVE-2026-96207 CRITICAL 10.0 MITIGATE Improper certificate validation in Microsoft Partner Center allows an unauthorized attacker to elevate privile

References

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