CVE-2026-93009 — Vulnerability intelligence
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Published:
- CVSS
- 4.3
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
A flaw was found in dnsmasq. The DHCPv6 client hostname parser can read one byte past the end of a crafted FQDN option because it checks the next label length before confirming the pointer is still inside the option. An attacker on the local network can trigger this with a single DHCPv6 packet. The extra byte is not returned to the client or logged, and no crash has been demonstrated.