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Mallory
HighPublic exploit

Stack-based buffer overflow in Tenda AC1206 /goform/setMacFilterCfg (formSetMacFilterCfg)

IdentifiersCVE-2025-7544CWE-121· Stack-based Buffer Overflow

CVE-2025-7544 is a critical stack-based buffer overflow in Tenda AC1206 firmware 15.03.06.23 within the formSetMacFilterCfg handler exposed via the /goform/setMacFilterCfg endpoint. The vulnerability is triggered by manipulating the deviceList argument (e.g., an oversized deviceList value), resulting in a stack-based buffer overflow condition. The issue is remotely reachable and has been publicly disclosed; reported exploitation uses an overlong deviceList (e.g., ~500 repeated characters) to trigger the overflow, with outcomes including denial of service and potential remote code execution.

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ANALYST BRIEF

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.

Remote exploitation can crash the device/service (DoS) and may enable remote code execution on the router, enabling full compromise of the affected device and subsequent use for botnet enrollment and follow-on activity.

Mitigation

If you can’t patch tonight, do this now.

Reduce exposure of the router management/HTTP interface: ensure /goform endpoints are not reachable from the internet (disable remote management/UPnP as applicable, restrict management to LAN/VPN, and apply network ACLs/firewall rules). Monitor for and block exploitation attempts targeting /goform/setMacFilterCfg with anomalously long deviceList values; consider IOC-based blocking of known related infrastructure where applicable.

Remediation

Patch, then assume compromise.

Upgrade to a fixed firmware version from Tenda if available; if no patched firmware exists for AC1206 15.03.06.23, replace the device with a supported model/firmware line that receives security updates.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
TendaAc1206 Firmwareoperating_system

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware2

Malware families riding this exploit, with evidence and IOCs.

Detection signatures1

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity7

Community discussion across Reddit, Mastodon, and other social sources.