CVE-2026-95508
A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. When the host is configured with a small interface MTU, a guest-supplied DHCPv6 CLIENTID option or TFTP blksize option can overflow the reply buffer with attacker-controlled content and length, resulting in denial of service and potentially arbitrary code execution in the host process. The default interface MTU is not affected.
- Published Sep 22, 2026
- CVSS 7.4 high
- 0.6% chance of exploitation in the next 30 days (EPSS)