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Vulnerability record · CVE-2026-43958 · published 1 June 2026

CVE-2026-43958: Stack-based buffer overflow vulnerability

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.

7.8 CVSS 3.1 High EPSS 0.20% · top 91.3% CWE-121 · Stack-based buffer overflow Awaiting Analysis
7.8CVSS 3.1 base score
0.20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
9References
28 Sep 2026Last modified by NVD

Description

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.

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

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:33731
https://access.redhat.com/errata/RHSA-2026:34155
https://access.redhat.com/errata/RHSA-2026:34156
https://access.redhat.com/errata/RHSA-2026:68702
https://access.redhat.com/errata/RHSA-2026:71600
https://access.redhat.com/errata/RHSA-2026:72277
https://access.redhat.com/errata/RHSA-2026:72278
https://access.redhat.com/security/cve/CVE-2026-43958
https://bugzilla.redhat.com/show_bug.cgi?id=2460932

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Source: NIST National Vulnerability Database (record CVE-2026-43958), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.