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CVE-2022-24355 is a stack-based buffer overflow in TP-Link TL-WR940N routers, affecting at least firmware 3.20.1 Build 200316 Rel.34392n (5553). The flaw exists in the httpd component, specifically the httpRpmFs functionality, during parsing of file name extensions. User-supplied data is copied into a fixed-length stack buffer without proper validation of input length, allowing an overlong extension value to overflow the stack. The issue is reachable by a network-adjacent attacker and does not require authentication. Successful exploitation can result in arbitrary code execution as root.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Buffer overflow in TP-Link TL-WR940N that was exploitable for remote code execution due to weak binary mitigations.
Buffer overflow in TP-Link TL-WR940N cited as an example of an exploitable router vulnerability leading to remote code execution.
A TP-Link router vulnerability described as unauthenticated with public exploits (at least for WR940N and WR841N), assessed in the content as the most straightforward candidate for 7777-Botnet infections of older TP-Link models.
A TP-Link router vulnerability considered the most plausible 7777-Botnet infection vector for several older TP-Link models because it is unauthenticated and has public exploits.
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.