Command Injection in LB-LINK Multiple Routers /goform/set_LimitClient_cfg
CVE-2023-26801 is a critical OS command injection vulnerability affecting LB-LINK 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 /goform/set_LimitClient_cfg endpoint, where the mac, time1, and time2 parameters are not properly neutralized before being used in command execution context. A remote attacker can send a crafted HTTP POST request to this endpoint and inject shell metacharacters or commands, resulting in arbitrary command execution on the device. Supporting reporting indicates the vulnerability has been used in the wild to download and execute botnet payloads, including Mirai-family malware.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.
A vulnerability explicitly observed being targeted by the Aquabot botnet for malware propagation.
The version that knows your environment.
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.