Windows Active Directory Certificate Services (AD CS) Remote Code Execution Vulnerability (Microsoft Windows 10 Version 1607)

CVE-2026-62818

HIGH 8.8

At a glance

Source: NVD
EPSS: EPSS 0.91 % · percentile 60 (2026-10-31)
State: PUBLISHED
Published: 2026-08-11 17:04 UTC
Updated: 2026-10-30 17:20 UTC
Assigner: microsoft
NVD status: Analyzed

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Description

Use after free in Active Directory Certificate Services (AD CS) allows an authorized attacker to execute code over a network.

Weaknesses (CWE)

CWE-416 — Use After Free

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62818

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	HIGH 8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)

European references

ENISA EUVD · EUVD-2026-56395
GCVE · GCVE-0-2026-62818

CERT-FR advisories

CERTFR-2026-AVI-1001 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* < 10.0.14393.9418
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* < 10.0.14393.9418
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* < 10.0.17763.9115
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* < 10.0.17763.9115
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.9418
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.9115
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.5440
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.33222

Affected products

Product	Versions
Microsoft · Windows 10 Version 1607	affected 10.0.14393.0 < 10.0.14393.9418
Microsoft · Windows 10 Version 1809	affected 10.0.17763.0 < 10.0.17763.9121
Microsoft · Windows Server 2012	affected 6.2.9200.0 < 6.2.9200.26280
Microsoft · Windows Server 2012 (Server Core installation)	affected 6.2.9200.0 < 6.2.9200.26280
Microsoft · Windows Server 2012 R2	affected 6.3.9600.0 < 6.3.9600.23338
Microsoft · Windows Server 2012 R2 (Server Core installation)	affected 6.3.9600.0 < 6.3.9600.23338
Microsoft · Windows Server 2016	affected 10.0.14393.0 < 10.0.14393.9418
Microsoft · Windows Server 2016 (Server Core installation)	affected 10.0.14393.0 < 10.0.14393.9418
Microsoft · Windows Server 2019	affected 10.0.17763.0 < 10.0.17763.9121
Microsoft · Windows Server 2019 (Server Core installation)	affected 10.0.17763.0 < 10.0.17763.9121
Microsoft · Windows Server 2022	affected 10.0.20348.0 < 10.0.20348.5499
Microsoft · Windows Server 2025	affected 10.0.26100.0 < 10.0.26100.33296
Microsoft · Windows Server 2025 (Server Core installation)	affected 10.0.26100.0 < 10.0.26100.33296

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD