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CVE-2026-5264 is a heap-based buffer overflow in wolfSSL's DTLS 1.3 ACK message processing. According to the provided advisory content, a remote attacker can send a crafted DTLS 1.3 ACK message that triggers a heap buffer overflow during parsing or handling of that ACK message. The issue affects systems using wolfSSL with DTLS 1.3 support enabled, and the flaw is reachable remotely prior to peer authentication according to the broader advisory context on DTLS 1.3 ACK handling. wolfSSL reports that this issue was fixed in pull request 10076 and included in wolfSSL 5.9.1.
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5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A heap buffer overflow vulnerability in wolfSSL DTLS 1.3 ACK handling that may allow remote crashes or code execution.
A heap buffer overflow vulnerability in DTLS 1.3 ACK message processing that can be triggered remotely via a crafted ACK message.
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.