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CVE-2025-66176 is a stack-based buffer overflow vulnerability in the Search and Discovery feature of Hikvision Access Control products. The flaw can be triggered by sending specially crafted discovery-related packets to an unpatched device from the same local area network. The vulnerable condition exists in the device discovery functionality used for network detection and can be reached without authentication or user interaction. Successful exploitation can cause the target device to malfunction, and the assigned CVSS v3.1 vector indicates potential high impact to confidentiality, integrity, and availability.
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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.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Buffer overflow vulnerability in Hikvision device discovery functionality, mentioned only as background comparison.
Unknown
A high-severity stack overflow vulnerability in Hikvision’s Search and Discovery feature that can be triggered by LAN-adjacent attackers using crafted packets, potentially causing device malfunction/crash (DoS) and high CIA impact without authentication.
A stack overflow vulnerability in the Search and Discovery feature of Hikvision Access Control Products that could allow an attacker on the same LAN to cause device malfunction via specially crafted packets.
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.