What is CVE-2026-6507?

CVE-2026-6507 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-04-17.

How severe is CVE-2026-6507?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Red Hat Enterprise Linux 10

CVE-2026-6507

A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` optio…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (14.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

access.redhat.com/security/cve/CVE-2026-6507 (vdb-entry, x_refsource_REDHAT)
RHBZ#2459181 (issue-tracking, x_refsource_REDHAT)

Frequently asked questions

What is CVE-2026-6507?: CVE-2026-6507 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-04-17.
How severe is CVE-2026-6507?: High severity. CVSS v3 base score is 7.5 out of 10.