CVE-2026-38426

HIGH

Tasmota < 15.3.0.3 - Buffer Overflow via xdrv_10_scripter.ino strcpy Function

Title source: llm

Description

Buffer Overflow vulnerability in arendst Tasmota v.15.3.0.3 and before allows a remote attacker to execute arbitrary code via the xdrv_10_scripter.ino, fetch_jpg(), jpg_task.boundary[40], strcpy() function.

References (2)

Core 2

Core References

https://github.com/arendst/Tasmota/blob/c207cc2/tasmota/tasmota_xdrv_driver/xdrv_10_scripter.ino

View Writeup ZIP pw:eip

https://github.com/sermikr0/CVE-2026-38426

View Exploit ZIP pw:eip

Scores

CVSS v3 7.3

EPSS 0.0055

EPSS Percentile 41.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-120

Status published

Published May 27, 2026

Tracked Since May 27, 2026