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CVE-2025-61787 is a command injection vulnerability in the Deno JavaScript, TypeScript, and WebAssembly runtime on Windows. It affects Deno versions prior to 2.5.3 and 2.2.15 when batch files such as .bat or .cmd are executed. The issue arises from Windows process creation semantics: CreateProcess() implicitly invokes cmd.exe when launching batch files, even if the caller does not explicitly include cmd.exe in the command line. As a result, arguments passed to a batch file may be interpreted by the Windows command processor, enabling improper neutralization of command-special characters and command-line injection. The vulnerability is classified as CWE-77.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity command injection vulnerability in Deno affecting Windows systems.
A command injection vulnerability in Deno on Windows arising from implicit cmd.exe invocation when executing batch files via CreateProcess(), enabling command line injection in affected Deno versions.
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.