CVEvulnerability

CVE-2026-27853

7.5 HIGH Published 2026-03-31 Modified 2026-07-25 Official page ↗
Status
Analyzed
Published
2026-03-31
Last modified
2026-07-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-787

Description

An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535 bytes, potentially leading to a crash resulting in denial of service.

Affected configurations

• powerdns dnsdist (>= 1.9.0 < 1.9.12) • powerdns dnsdist (>= 2.0.0 < 2.0.3)

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References