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

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OETIKER+PARTNER RRDtool是OETIKER+PARTNER公司的一个时间序列数据存储与绘图系统。 OETIKER+PARTNER RRDtool存在安全漏洞，该漏洞源于栈缓冲区溢出，可能导致本地攻击者通过发送超大的CREATE请求，造成守护进程崩溃或执行任意代码。

CVSS 7.8 · High EPSS 0.18% · P6

Affected Version Matrix 9

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 0:1.8.0-21.el10_2< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.8.0-20.el10_0.1< * unaffected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 0:1.7.0-17.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:1.7.2-22.el9_8< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.7.2-21.el9_2.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.7.2-21.el9_4.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.7.2-21.el9_6.1< * unaffected
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I. Basic Information for CVE-2026-43958

Vulnerability Information
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Vulnerability Title
Rrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
OETIKER+PARTNER RRDtool 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OETIKER+PARTNER RRDtool是OETIKER+PARTNER公司的一个时间序列数据存储与绘图系统。 OETIKER+PARTNER RRDtool存在安全漏洞，该漏洞源于栈缓冲区溢出，可能导致本地攻击者通过发送超大的CREATE请求，造成守护进程崩溃或执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 0:1.8.0-21.el10_2 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.8.0-20.el10_0.1 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 8 0:1.7.0-17.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 9 0:1.7.2-22.el9_8 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.7.2-21.el9_2.1 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.7.2-21.el9_4.1 ~ * cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.7.2-21.el9_6.1 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7

II. Public POCs for CVE-2026-43958

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III. Intelligence Information for CVE-2026-43958

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Vendor Advisories for CVE-2026-43958 (9)

Same Patch Batch · Red Hat · 2026-06-01 · 3 CVEs total

CVE-2026-10118 7.8 HIGH Poppler: integer overflow in poppler splashoutputdev::tilingpatternfill leads to heap buff
CVE-2026-10533 5.0 MEDIUM Openshift: openshift: non-admin user can bypass resourcequota and flood etcd with events c

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-121

V. Comments for CVE-2026-43958

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