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CVE-2026-65423

An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to trigger an out-of-bounds write.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:282255389fc7a224e8f471d276d765643904ea8ac9cc1693b76de84e8d11bf8e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"H…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","platforms":["Windows","Linux"],"product":"open62541","vendor":"o6 Automation","versions":[{"lessThanOrEqual":"1.3.17","status":"affected","version":"1.3.0","versionType":"custom"},{"lessThanOrEqual":"1.4.16","status":"affected","version":"1.4.0","versionType":"custom"},{"lessThanOrEqual":"1.5.4","status":"affected","version":"1.5.0","versionType":"custom"},{"status":"affected","version":"master"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"H…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-190","description":"CWE-190","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-08.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/references/6
{"url":"https://github.com/open62541/open62541/pull/8235/commits/b666d35769ce63998442e4d0810a3fb10b50179f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/references/1
{"url":"https://github.com/open62541/open62541/pull/8236/commits/06b99fef667c8ec5bdf0605b4f00c84fcc1d3a60"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/references/2
{"url":"https://github.com/open62541/open62541/pull/8237/commits/1b71d9c5d9c4d02d4729b8903a52e9f530bf804e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/references/3
{"url":"https://github.com/open62541/open62541/pull/8238/commits/afab4107bfd161da9ce8bb30ed77f3968c9c97df"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/references/4
{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-08"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/references/5
{"url":"https://www.o6-automation.com/contact"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7cdb40482756c9d3ba7fe14e3ecd03b5776cbe3d90adb66abf661c413698e472 · sha256:455d04805015a759… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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