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CVE-2026-49199 is a command injection vulnerability in the MQTT broker processing logic of Acer Connect W6x consumer wireless devices. Crafted MQTT messages can reach vulnerable message-handling code and trigger execution of unintended system commands or scripts. The issue is associated with insufficient sanitization of incoming MQTT payload data at the application layer, allowing attacker-controlled messaging strings to influence command execution paths. Successful exploitation results in arbitrary code execution on the target device with root privileges.
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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 critical command injection vulnerability in the MQTT broker processing logic of Acer Connect W6x devices that can lead to arbitrary code execution.
A command injection vulnerability reachable via crafted MQTT messages that can lead to root-level code execution on the target device.
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.