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CVE-2023-26801 is a critical OS command injection vulnerability affecting multiple LB-LINK router firmware versions, including BL-AC1900_2.0 v1.0.1, BL-WR9000 v2.4.9, BL-X26 v1.2.5, and BL-LTE300 v1.0.8. The flaw is present in the HTTP-exposed /goform/set_LimitClient_cfg handler, where the mac, time1, and time2 parameters are not properly sanitized before being incorporated into command execution logic. An unauthenticated remote attacker can send a crafted HTTP POST request containing shell metacharacters or injected command content through these parameters, causing arbitrary commands to be executed on the device operating system. The vulnerability has been publicly documented and observed in botnet exploitation activity against internet-exposed devices.
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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.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A command injection vulnerability in LB-LINK devices reachable via /goform/set_LimitClient_cfg that RondoDox targeted in consumer router exploitation.
Remote command execution via crafted HTTP POST parameter injection against the /goform/set_LimitClient_cfg endpoint, used to download and execute a malicious script from external infrastructure.
A command injection vulnerability in LB-LINK routers, exploited by RondoDox.
A vulnerability in LB-LINK devices exploited by the RondoDox botnet.
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.