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CVE-2026-33826 is a critical remote code execution vulnerability in Windows Active Directory caused by improper input validation in RPC handling. An authenticated attacker on an adjacent network can trigger the flaw by sending a specially crafted Remote Procedure Call to an affected RPC host. Successful exploitation requires the attacker to be within the same restricted Active Directory domain as the target system. The vulnerable condition can cause the target server to execute attacker-controlled code with the same permissions as the RPC service, creating a high-risk path for compromise of Active Directory services and domain security.
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Patch, then assume compromise.
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.
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.
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.
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.