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No exploitation reportedFix available

CVE-2026-65815

No exploitation reported by the sources we read.

  • Published2026-08-11
  • Fixed in9.1.47.06
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

Timeline

dates in UTC
  1. 2026-08-1117:19CVE publishedNVD

Versions per branch

NVD
Microsoft dynamics 365
BranchAffectedFixed in
9.1≥ 9.1, < 9.1.47.069.1.47.06

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Dynamics 365 (on-premises) version 9.1
    Affected
    • ≥ 9.0, < 9.1.0047.0006fixed in 9.1.0047.0006custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-30

Fix

  1. Update Microsoft dynamics 365 to 9.1.47.06

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-08-11
Last Modified
2026-10-24
NVD status
Analyzed
GitHub Advisory
GHSA-83pg-fr4f-gxq5

Frequently asked questions

What is CVE-2026-65815?

Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

Is CVE-2026-65815 actively exploited?

Active exploitation of CVE-2026-65815 has not been confirmed. Its EPSS score was 1.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-65815?

CVE-2026-65815 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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