PT-2026-33448 · Dnsmasq · Dnsmasq

Published 2026-04-17 · Updated 2026-04-28 · CVE-2026-6507

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions dnsmasq (affected versions not specified)

Description A remote attacker can trigger an out-of-bounds write by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a server configured with the --dhcp-split-relay option. This leads to memory corruption, which causes the daemon to crash and results in a denial of service (DoS).

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-6507

OPENSUSE-SU-2026:10605-1

Affected Products

Dnsmasq

References · 12

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-6507 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-6507 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6507 · Security Note
• https://ubuntu.com/security/CVE-2026-6507 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10605-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-6507 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-6507 · Security Note
• https://twitter.com/giuseppe_1337/status/2048926491413545034 · Twitter Post
• https://bugzilla.redhat.com/show_bug.cgi?id=2459181 · Note
• https://access.redhat.com/security/cve/CVE-2026-6507 · Note
• https://suse.com/security/cve/CVE-2026-6507 · Note
• https://twitter.com/VulmonFeeds/status/2045145391608312103 · Twitter Post