CVE-2025-12198 | dnsmasq up to 2.73rc6 Config File src/util.c parse_hex i heap-based overflow
A vulnerability classified as critical has been found in dnsmasq up to 2.73rc6. Affected is the function parse_hex of the file src/util.c of the component Config File Handler. The manipulation of the argument i leads to heap-based buffer overflow.
This vulnerability is uniquely identified as CVE-2025-12198. Local access is required to approach this attack. Moreover, an exploit is present.
The vendor was contacted early about this disclosure but did not respond in any way.