CVE-2026-69558
CVE-2026-69558 is a high-severity vulnerability in Microsoft Partner Center with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.
Key facts
- Severity: High (CVSS 3.x base score 8.6)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-639
- Affected product: Microsoft Partner Center
- Published:
- Last modified:
Description
Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.
Frequently asked questions
- What is CVE-2026-69558?
- Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.
- How severe is CVE-2026-69558?
- CVE-2026-69558 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-69558 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-69558?
- CVE-2026-69558 affects Microsoft Partner Center. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-69558?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-69558 published?
- CVE-2026-69558 was published on 2026-08-20 and last updated on 2026-08-25.
References
Affected products (1)
- cpe:2.3:a:microsoft:partner_center:-:*:*:*:*:*:*:*
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