PT-2026-43711 · Undefined · Undefined

Sermikr0 · Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-38427

Mitre

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

Exploit

Fix

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-38427

Affected Products

Undefined

References · 3

• 🔥 https://github.com/sermikr0/CVE-2026-38427 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-38427 · Security Note
• https://github.com/arendst/Tasmota/blob/c207cc2/tasmota/tasmota_xdrv_driver/xdrv_10_scripter.ino · Note