Remote Code Execution in Windows Active Directory Domain Services
CVE-2026-45648 is a critical stack-based buffer overflow vulnerability in Windows Active Directory Domain Services (AD DS). According to the provided content and Microsoft-associated references, the flaw allows an authorized attacker to execute code over a network. The vulnerability is classified as CWE-121 and is described as affecting AD DS specifically, with exploitation requiring low privileges and no user interaction. The supplied CVSS v3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating straightforward network exploitation by an authenticated attacker and potential for full compromise of confidentiality, integrity, and availability.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical stack-based buffer overflow remote code execution vulnerability in Windows Active Directory Domain Services.
A critical remote code execution vulnerability in Windows Active Directory Domain Services caused by a stack-based buffer overflow.
A stack-based buffer overflow vulnerability in Active Directory Domain Services that allows an authorized attacker to execute code over a network.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.