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.
Published: 2026-06-01
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Restrict access to the `rrdcached` UNIX socket using filesystem permissions and group ownership to prevent untrusted local users from connecting. Avoid exposing `rrdcached` on TCP listeners unless strictly necessary, and ensure any such listeners are protected by network access controls. Additionally, run the `rrdcached` daemon as an unprivileged user and group using the `-U` and `-G` options to minimize impact in case of compromise. If `rrdcached` is restarted or reloaded, these configurations will be reapplied.

Tracking

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Advisories

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History

Wed, 01 Jul 2026 01:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.2
References

Tue, 02 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 02 Jun 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 01 Jun 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title Rrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-121
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-07-01T00:21:08.371Z

Reserved: 2026-05-04T18:07:21.843Z

Link: CVE-2026-43958

cve-icon Vulnrichment

Updated: 2026-06-02T15:36:22.102Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-01T19:16:47.970

Modified: 2026-06-02T14:01:54.893

Link: CVE-2026-43958

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-06-01T17:04:30Z

Links: CVE-2026-43958 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-02T20:53:09Z

Weaknesses