CVE-2025-28034

CRITICAL

Totolink A800r Firmware - OS Command Injection

Title source: rule

Description

TOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 were found to contain a pre-auth remote command execution vulnerability in the NTPSyncWithHost function through the hostTime parameter.

References (2)

[Exploit, Third Party Advisory] https://locrian-lightning-dc7.notion.site/RCE2-1a98e5e2b1a280bebf53d868f1b1a711?pvs=74

[Exploit, Third Party Advisory] https://locrian-lightning-dc7.notion.site/CVE-2025-28034-RCE2-1a98e5e2b1a280bebf53d868f1b1a711

Scores

CVSS v3 9.8

EPSS 0.0636

EPSS Percentile 90.8%

Attack Vector NETWORK

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

Classification

CWE

CWE-78

Status published

Affected Products (6)

totolink/a800r_firmware

totolink/a810r_firmware

totolink/a830r_firmware

totolink/a950rg_firmware

totolink/a3000ru_firmware

totolink/a3100r_firmware

Timeline

Published Apr 22, 2025

Tracked Since Feb 18, 2026