High 7.8Published Jun 1, 2026

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

Updated under an hour ago (Oct 26, 2026, 9:50 PM ET)

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It affects Red Hat Enterprise Linux 10 and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Sep 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	from 0:1.8.0-21.el10_2 not affected	CNA record
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus	from 0:1.8.0-20.el10_0.1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions redhat:rhel_e4s	from 0:1.7.2-21.el9_2.1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus	from 0:1.7.2-21.el9_6.1 not affected	CNA record

References

References

https://access.redhat.com/errata/RHSA-2026:33731	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:34155	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:34156	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:68702	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:71600	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:72277	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:72278	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2026-43958	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2460932	issue-tracking, x-refsource-redhat

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.