{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43958","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-05-04T18:07:21.843Z","datePublished":"2026-06-01T17:34:17.226Z","dateUpdated":"2026-09-28T03:30:24.995Z"},"containers":{"cna":{"title":"Rrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service","metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","versions":[{"version":"0:1.8.0-21.el10_2","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","versions":[{"version":"0:1.8.0-20.el10_0.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","versions":[{"version":"0:1.7.0-17.el8_10","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:enterprise_linux:8::appstream","cpe:/a:redhat:enterprise_linux:8::crb"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","versions":[{"version":"0:1.7.2-22.el9_8","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/a:redhat:enterprise_linux:9::crb"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","versions":[{"version":"0:1.7.2-21.el9_2.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:9.2::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","versions":[{"version":"0:1.7.2-21.el9_4.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:9.4::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.6 Extended Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","versions":[{"version":"0:1.7.2-21.el9_6.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream","cpe:/a:redhat:rhel_eus:9.6::crb"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rrdtool","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:7"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:33731","name":"RHSA-2026:33731","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:34155","name":"RHSA-2026:34155","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:34156","name":"RHSA-2026:34156","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:68702","name":"RHSA-2026:68702","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:71600","name":"RHSA-2026:71600","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:72277","name":"RHSA-2026:72277","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:72278","name":"RHSA-2026:72278","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-43958","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460932","name":"RHBZ#2460932","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2026-06-01T17:04:30.295Z","problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"Stack-based Buffer Overflow","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-121: Stack-based Buffer Overflow","workarounds":[{"lang":"en","value":"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."}],"timeline":[{"lang":"en","time":"2026-04-22T23:10:41.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-06-01T17:04:30.295Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank AISLE Research for reporting this issue."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-09-28T03:30:24.995Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-02T15:36:15.651344Z","id":"CVE-2026-43958","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-02T15:36:26.259Z"}}]}}