CRITICAL
CVE-2026-88131
CVSS v3
9.8
CRITICAL
EPSS Score
—
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over a network.
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2026-10-08
- Last Modified
- 2026-10-09
Frequently asked questions
What is CVE-2026-88131?
Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over a network.
Is CVE-2026-88131 actively exploited?
Active exploitation of CVE-2026-88131 has not been confirmed.
What is the CVSS score for CVE-2026-88131?
CVE-2026-88131 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is CVE-2026-88131 affecting your environment?
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