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CVE-2026-18844 is a high-severity firmware vulnerability in the Pulsetto Vagus Nerve Stimulator. The device firmware accepts several undocumented Bluetooth Low Energy commands that are not used by the companion mobile application, yet are fully processed by the device whenever it is powered on. These commands can be sent without authentication or encryption, exposing a hidden command interface over BLE to any nearby attacker. The issue affects all current firmware versions. The weakness enables unauthorized control over device behavior through undocumented functionality that should not be reachable without proper access control and transport protection.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity vulnerability in the Pulsetto Vagus Nerve Stimulator firmware caused by acceptance of hidden BLE commands without authorization or encryption, which could allow disabling electrical safety mechanisms or modifying stimulation output settings.
An authentication-free and unencrypted BLE command handling vulnerability in the firmware of the Pulsetto Vagus Nerve Stimulator, allowing the device to process undisclosed commands over Bluetooth when powered on.
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.