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CVE-2025-11837 is an improper control of code generation vulnerability in QNAP Malware Remover. The flaw is present in the malware_remover.cgi endpoint, where insufficient validation of a user-supplied string permits Python code execution. It can be used to bypass Malware Remover protection mechanisms and execute attacker-controlled code with root privileges on affected QNAP TS-453E devices.
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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.
If you can’t patch tonight, do this now.
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.
24 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability used to spread the AryStinger Standard variant to NAS devices.
A code injection vulnerability in QNAP Malware Remover used by AryStinger's Go-based variant to target NAS devices; notable because attackers exploited it within months of patch release.
A code injection vulnerability in QNAP Malware Remover that a second AryStinger strain uses to target QNAP NAS devices.
A vulnerability exploited by the AryStinger botnet to compromise outdated routers, particularly D-Link DIR-850L and DIR-818LW devices.
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.