Windows Active Directory Remote Code Execution Vulnerability
CVE-2026-33826 is a critical remote code execution vulnerability in Windows Active Directory caused by improper input validation in Active Directory RPC handling. An authenticated attacker can exploit the flaw by sending a specially crafted Remote Procedure Call (RPC) to an affected RPC host. Successful exploitation requires the attacker to be on an adjacent network and within the same restricted Active Directory domain as the target system. If triggered successfully, the target executes attacker-controlled code with the same permissions as the RPC service/host.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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 valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical remote code execution vulnerability in Windows Active Directory caused by improper input validation in RPC handling, allowing an authenticated attacker in the same restricted Active Directory domain to execute code with RPC service privileges.
A critical Windows Active Directory remote code execution vulnerability that allows an authenticated attacker on an adjacent network to execute code via a crafted RPC call.
A critical improper input validation vulnerability in Windows Active Directory that can lead to remote code execution over an adjacent 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.