OS Command Injection in Totolink A7100RU setVpnPassCfg
CVE-2026-5850 is an OS command injection vulnerability affecting Totolink A7100RU firmware version 7.4cu.2313_b20191024. The flaw is present in the setVpnPassCfg function exposed through /cgi-bin/cstecgi.cgi in the CGI Handler component. According to the provided content, improper handling of the pptpPassThru argument allows attacker-controlled input to be incorporated into operating system command execution. The issue is remotely exploitable, and a public exploit is available.
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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
If you can’t patch tonight, do this now.
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
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.