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CVE-2026-76928 is a NULL pointer dereference in Wireshark's generated X.509IF protocol dissector, affecting the DN/RDN formatting logic. Nested DistinguishedName decoding can overwrite and clear file-static formatter state used by an outer RelativeDistinguishedName decoder. When nested decoding returns, the outer decoder dereferences the cleared string-buffer pointer, causing a deterministic crash. The issue affects Wireshark 4.6.0 through 4.6.7 and 4.4.0 through 4.4.18.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service crash in the Wireshark X.509IF protocol dissector.
A Wireshark vulnerability addressed by Debian DSA-6471; the advisory states the set of flaws could cause denial of service or arbitrary-code execution.
A network-accessible, low-complexity vulnerability requiring no privileges or user interaction, with an impact confined to availability (CVSS 3.0: 7.5). The affected Unity Linux/UOS Server package or component is not identified in the supplied content.
An unpatched vulnerability tracked as CVE-2026-76928 affecting Debian Linux systems with the Wireshark package installed; the provided CVSS vectors indicate a network-exploitable availability impact.
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.