Stack-based Buffer Overflow in Tenda W12 cgiWifiMacFilterSet
CVE-2026-10191 is a remotely exploitable stack-based buffer overflow affecting Tenda W12 firmware version 3.0.0.7(4763). The flaw is in the cgiWifiMacFilterSet function within /bin/httpd and is triggered by manipulation of the wifiMacFilterSet.macList.mac argument. Improper handling of attacker-controlled input allows data to overflow a stack buffer during request processing. Public exploit disclosure has been reported.
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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.