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Vulnerability record · CVE-2026-55944 · published 14 July 2026

CVE-2026-55944: Microsoft dynamics nav deserialization of untrusted data vulnerability

Microsoft · Dynamics Nav

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

9.8 CVSS 3.1 Critical EPSS 1.5% · top 26.2% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
22 Jul 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55944 Vendor AdvisoryPatch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.5CVE-2022-41127Microsoft dynamics 365 business central vulnerabilityMicrosoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution VulnerabilityEPSS 1.6%8.0CVE-2020-1022Microsoft dynamics 365 business central vulnerabilityA remote code execution vulnerability exists in Microsoft Dynamics Business Central, aka 'Dynamics Business Central Remote Code Execution Vulnerabili…EPSS 6.8%8.0CVE-2020-0905Microsoft dynamics 365 business central vulnerabilityAn remote code execution vulnerability exists in Microsoft Dynamics Business Central, aka 'Dynamics Business Central Remote Code Execution Vulnerabil…EPSS 11%7.5CVE-2020-1018Microsoft dynamics 365 business central information exposure vulnerabilityAn information disclosure vulnerability exists when Microsoft Dynamics Business Central/NAV on-premise does not properly hide the value of a masked f…EPSS 6.3%6.5CVE-2020-17133Microsoft dynamics nav vulnerabilityMicrosoft Dynamics Business Central/NAV Information Disclosure VulnerabilityEPSS 3.6%6.1CVE-2021-1724Microsoft dynamics 365 business central cross-site scripting vulnerabilityMicrosoft Dynamics Business Central Cross-site Scripting VulnerabilityEPSS 1.3%5.4CVE-2021-36946Microsoft dynamics 365 business central cross-site scripting vulnerabilityMicrosoft Dynamics Business Central Cross-site Scripting VulnerabilityEPSS 1.0%5.4CVE-2018-8651Microsoft dynamics nav cross-site scripting vulnerabilityA cross site scripting vulnerability exists when Microsoft Dynamics NAV does not properly sanitize a specially crafted web request to an affected Dyn…EPSS 1.5%

Source: NIST National Vulnerability Database (record CVE-2026-55944), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.