Intel

CVE-2026-88131

Die Deserialisierung von nicht vertrauenswürdigen Daten in Microsoft Dataverse ermöglicht es einem nicht autorisierten Angreifer, Code üb…

criticalEPSS 0.8%

Description

Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over a network.

Source: cvelistv5NVD (NIST)BSI CSAFBSI WID PortalMicrosoft Security Update Guide

Metrics

XIEM Effective CVSS
9.8
Source: nvd-v3
EPSS percentile
56.6 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
104.66
Exploit maturity
no public PoC known
CVSS v3
9.8
EPSS score
0.8 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-10-08 22:15 UTC
CWE
CWE-502

Weakness classes (CWE)

  • CWE-502Base

    Deserialization of Untrusted Data

    The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-10-10 04:18 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-88131","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technical…
    • SSVC: {"id":"CVE-2026-88131","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technical…
  2. CVE Modified2026-10-09 15:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-88131","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technical…
  3. New CVE Received2026-10-08 23:17 UTC· secure@microsoft.com
    • Tag: exclusively-hosted-service
    • Description: Deserialization of untrusted data in Microsoft Dataverse allows an unauthorized attacker to execute code over a network.
    • CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    • CWE: CWE-502