How severe is CVE-2026-26150?

CVE-2026-26150 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-2026-26150 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26150?

CVE-2026-26150 affects Microsoft Purview Ediscovery. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26150?

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.

Does CVE-2026-26150 have an EU (EUVD) identifier?

Yes. CVE-2026-26150 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25304.

When was CVE-2026-26150 published?

CVE-2026-26150 was published on 2026-04-23 and last updated on 2026-06-17.

CVE-2026-26150

CVE-2026-26150 is a high-severity vulnerability in Microsoft Purview Ediscovery 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-918.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25304
Weakness: CWE-918
Affected product: Microsoft Purview Ediscovery
Published: 2026-04-23
Last modified: 2026-06-17

Description

Server-side request forgery (ssrf) in Microsoft Purview allows an unauthorized attacker to elevate privileges over a network.

Frequently asked questions

What is CVE-2026-26150?: Server-side request forgery (ssrf) in Microsoft Purview allows an unauthorized attacker to elevate privileges over a network.
How severe is CVE-2026-26150?: CVE-2026-26150 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-2026-26150 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26150?: CVE-2026-26150 affects Microsoft Purview Ediscovery. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26150?: 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.
Does CVE-2026-26150 have an EU (EUVD) identifier?: Yes. CVE-2026-26150 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25304.
When was CVE-2026-26150 published?: CVE-2026-26150 was published on 2026-04-23 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26150

Affected products (1)

cpe:2.3:a:microsoft:purview_ediscovery:-:*:*:*:*:*:*:*

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