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CVE-2026-48561 is a critical remote code execution vulnerability in Microsoft Copilot caused by improper neutralization of special elements used in a command, resulting in a command injection condition. The flaw is remotely exploitable over the network without prior authentication or privileges, but exploitation requires user interaction. Reported attack scenarios indicate that a malicious website can cause Microsoft Edge for Android to automatically send crafted prompts to Copilot when a user visits the site, and the affected component may process those requests without confirmation or origin checks. Successful exploitation can trigger unintended Copilot actions, including command execution, and Microsoft indicated that exploitation may involve a scope change across a security boundary, including traversal from a low-privilege Hyper-V guest to code execution in the Hyper-V host execution environment.
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No public exploit code observed for this vulnerability.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical remote code execution vulnerability in Microsoft Copilot.
A critical remote code execution vulnerability in Microsoft Copilot that can be triggered over the network via a malicious website causing Edge for Android to send crafted prompts to Copilot.
A critical remote code execution vulnerability in Microsoft Copilot that can be triggered over the network via a malicious website causing Microsoft Edge for Android to send crafted prompts to Copilot.
A remote code execution vulnerability in Copilot caused by improper neutralization of input, allowing unauthorized code execution from low-privileged Hyper-V guest access.
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.