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CVE-2026-26399

A stack-use-after-return issue exists in the Arduino_Core_STM32 library prior to version 1.7.0. The pwm_start() function allocates a TIM_HandleTypeDef structure on the stack and passes its address to HAL initialization routines, where it is stored in a global timer handle registry. After the function returns, interrupt service routines may dereference this dangling pointer, resulting in memory corruption.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:240a770df1fb290c61404dcdad8ed7e66bbf92c1ba4cc6874897f8f03fd5e2c2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-562","description":"CWE-562 Return of Stack Variable Address","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-562","description":"CWE-562 Return of Stack Variable Address","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"https://github.com/Acen28/CVE-2026-26399-Disclosure"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /containers/cna/references/1
{"url":"https://github.com/stm32duino/Arduino_Core_STM32/releases/tag/1.6.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:47a2376bccacd5d9004d2458187dc6ada280479fb653696447d02854288beaa6 · sha256:8fcb30482fb978f0… · /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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