VulnerabilityAnalyzed
CVE-2026-88131
Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over a network.
CRITICAL 9.8EPSS 0.82%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.82%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over a network.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.82% probability · 57th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- microsoft/dataverse
- Source
- secure@microsoft.com
EPSS moved from 0.8% on 9 October 2026 to 0.8% on 22 October 2026.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.