CVE-2026-38427 | THREATINT

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.

PUBLISHED Reserved 2026-04-06 | Published 2026-05-27 | Updated 2026-05-27 | Assigner mitre

References

github.com/sermikr0/CVE-2026-38427 exploit

github.com/...smota/tasmota_xdrv_driver/xdrv_10_scripter.ino

github.com/sermikr0/CVE-2026-38427

cve.org (CVE-2026-38427)

nvd.nist.gov (CVE-2026-38427)

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