Vulnerability Description
An issue in fetch_jpg() in xdrv_10_scripter.ino in Tasmota through 15.3.0.3 allows a remote attacker to cause heap buffer overflow. The Content-Length from a JPEG stream is stored in a uint16_t variable; values above 65535 wrap around, causing allocation of a smaller buffer than the data actually read.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/arendst/Tasmota/blob/c207cc2/tasmota/tasmota_xdrv_driver/xdrv
- https://github.com/sermikr0/CVE-2026-38427
- https://github.com/sermikr0/CVE-2026-38427
FAQ
What is CVE-2026-38427?
CVE-2026-38427 is a vulnerability with a CVSS score of 7.3 (HIGH). An issue in fetch_jpg() in xdrv_10_scripter.ino in Tasmota through 15.3.0.3 allows a remote attacker to cause heap buffer overflow. The Content-Length from a JPEG stream is stored in a uint16_t variab...
How severe is CVE-2026-38427?
CVE-2026-38427 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-38427?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.