CVE-2026-43958 HIGH

CVE-2026-43958: Rrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-121
Published June 1, 2026
Last update July 1, 2026

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A flaw was found in rrdcached, a component of rrdtool. A local attacker with access to a rrdcached socket can exploit a stack-based buffer overflow by sending an oversized CREATE request. This vulnerability can lead to a denial of service by crashing the daemon or potentially allow for arbitrary code execution, impacting the integrity and confidentiality of data.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
July 1, 2026 Record updated