CVE-2025-28034

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.

CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
totolink	a800r_firmware	All
totolink	a800r	All
totolink	a810r_firmware	All
totolink	a810r	All
totolink	a830r_firmware	All
totolink	a830r	All
totolink	a950rg_firmware	All
totolink	a950rg	All
totolink	a3000ru_firmware	All
totolink	a3000ru	All
totolink	a3100r_firmware	All
totolink	a3100r	All

References

Exploits

https://locrian-lightning-dc7.notion.site/RCE2-1a98e5e2b1a280bebf53d868f1b1a711?pvs=74 https://locrian-lightning-dc7.notion.site/CVE-2025-28034-RCE2-1a98e5e2b1a280bebf53d868f1b1a711

Frequently Asked Questions

What is CVE-2025-28034? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-28034? +

CVE-2025-28034 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-28034? +

CVE-2025-28034 affects products from totolink, specifically: a3000ru, a3000ru_firmware, a3100r, a3100r_firmware, a800r, a800r_firmware, a810r, a810r_firmware, a830r, a830r_firmware, a950rg, a950rg_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-28034? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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