PatchTheCVECVE-2026-18413: The ADC API requires each driver to reject a sampling sequence whose destination buffer is too small: the buff
CVE-2026-18413 is a high-severity flaw (CVSS 7.8) affecting zephyr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The ADC API requires each driver to reject a sampling sequence whose destination buffer is too small: the buffer_size field of struct adc_sequence in include/zephyr/drivers/adc.h documents that "the driver must ensure that samples are not written beyond the limit and it must return an error if the buffer turns out to be not large enough". The NXP MCUX LPADC driver did not honour that contract. mcux_lpadc_start_read() in drivers/adc/adc_mcux_lpadc
Why this priority
- High severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 98%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2026-09-28 |
| Last modified | 2026-10-27 |
Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-18413?
zephyr: upgrade to 4.4.2. Exact commands for each OS are on this page.
Is CVE-2026-18413 being exploited?
CVE-2026-18413 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-18413 affect?
CVE-2026-18413 affects zephyr. Severity is high (CVSS 7.8). The ADC API requires each driver to reject a sampling sequence whose destination buffer is too small: the buffer_size field of struct adc_sequence in include/zephyr/drivers/adc.h documents that "the driver must ensure that samples are not w
How urgent is CVE-2026-18413?
Priority 33/100. High severity; Public exploit reference
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