CVE-2026-38427

High severity, CVSS 7.3. EPSS: 0.4% chance of exploitation in the next 30 days.

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 2026-05-27. Last modified 2026-06-17.