VULNERABILITY INTELLIGENCE

CVE-2026-38427

CVSS score7.3 HIGH
EPSS probability0.46%
CISA KEVNot currently listed
Published2026-05-27
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

Weakness classification

  • CWE-122: Heap-based Buffer Overflow

Primary references