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CVE-2020-29557 is a buffer overflow vulnerability affecting D-Link DIR-825 R1 devices through firmware version 3.0.1 prior to 2020-11-20. The flaw is present in the router's web management interface and can be triggered remotely without authentication. By sending crafted input to the vulnerable web interface component, an attacker can overflow a memory buffer and corrupt adjacent process memory, potentially gaining control of execution flow. The vulnerability is notable because it is reachable pre-authentication over the management interface and has been reported as exploited in the wild.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A buffer overflow vulnerability in D-Link DIR-825 R1 that the content notes was actively exploited in the wild.
A buffer overflow vulnerability affecting D-Link DIR-825 devices that the MANGA Mirai variant attempts to exploit.
A buffer overflow in a Wi-Fi router web interface that the content explicitly states was exploited in the wild.
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.