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.
References9
- access.redhat.com/errata/RHSA-2026:33731
- access.redhat.com/errata/RHSA-2026:34155
- access.redhat.com/errata/RHSA-2026:34156
- access.redhat.com/errata/RHSA-2026:68702
- access.redhat.com/errata/RHSA-2026:71600
- access.redhat.com/errata/RHSA-2026:72277
- access.redhat.com/errata/RHSA-2026:72278
- access.redhat.com/security/cve/CVE-2026-43958
- bugzilla.redhat.com/show_bug.cgi?id=2460932
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 7 · as of 15 November 2026
- CWE
- CWE-121
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.