{"id":"CVE-2026-43958","title":"A flaw was found in rrdcached, a component of rrdtool","summary":"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 servic…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-121"],"vendor":"Red Hat","product":"rrdtool","affected":["rrdtool (all versions)","rrdtool (all versions)","rrdtool (all versions)","rrdtool (all versions)","rrdtool (all versions)","rrdtool (all versions)"],"published":"2026-06-01","updated":"2026-09-17","sourceUpdated":"2026-09-17T19:16:47.900","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-43958","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:33731","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:34155","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:34156","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68702","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-43958","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460932","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43958.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43958"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43958"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-06-02T15:36:15.651344Z"},"epss":0.00133,"epssPercentile":0.03205,"ingestedAt":"2026-07-01T09:50:45.877Z","patched":["enterprise_linux_appstream_eus_v_10_0","enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_v_9","enterprise_linux_codeready_linux_builder_v_10","enterprise_linux_crb_v_8","enterprise_linux_codeready_linux_builder_v_9"],"slug":"CVE-2026-43958","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:68702** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68702)\n- **RHSA-2026:33731** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-06-30 · [advisory](https://access.redhat.com/errata/RHSA-2026:33731)\n- **RHSA-2026:34155** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-07-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:34155)\n- **RHSA-2026:34156** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-07-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:34156)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · updated 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43958.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}