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CVE-2021-35395 affects Realtek Jungle SDK versions 2.x through 3.4.14B. The SDK's embedded HTTP management server, implemented in both GoAhead-based webs and Boa-based boa variants, contains multiple unsafe handling flaws. Stack-based buffer overflows occur when form handlers copy attacker-controlled request parameters into fixed-size stack buffers without adequate bounds checking, including submit-url in formRebootCheck, formWsc, and formWlanMultipleAP; ifname in formWlSiteSurvey; hostname in formStaticDHCP; and peerPin in formWsc. The formSysCmd handler also permits arbitrary command execution through sysCmd, while formWsc permits command injection through peerPin. Exposure and reachability of individual vulnerable handlers varies according to the OEM's firmware customization, authentication implementation, and enabled management functions.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
A Realtek AP-Router SDK vulnerability involving command injection and out-of-bounds write, exploited by Zerobot.
A vulnerability for which Microsoft Defender for IoT has alerting because exploitation may be tied to Zerobot activity.
A stack-based buffer overflow vulnerability in SFK for a Wi-Fi chipset used in IoT/embedded devices; mentioned here only as an observed example for CWE-121.
Stack-based buffer overflows in SFK for Wi-Fi chipsets used by IoT and embedded devices, known to be 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.