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CVE-2026-3868 is an improper handling of length parameter inconsistency vulnerability in Moxa Secure Router products. According to the provided advisory content, the flaw exists in the HTTPS management interface due to improper validation of length parameters. An unauthenticated remote attacker can send specially crafted requests that trigger a buffer overflow condition, causing the embedded web service to become unresponsive. The issue affects multiple Moxa product lines, including TN-4900 Series firmware 3.22 and prior, EDR-8010 Series firmware 3.23 and prior, EDR-G9010 Series firmware 3.23.1 and prior, OnCell G4302-LTE4 Series firmware 3.23.0 and prior, OnCell G4308-LTE4 Series firmware 3.23.0 and prior, and EDF-G1002-BP Series firmware 3.23 and prior.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.