CVE-2025-28039 — CRITICAL (9.8)

Vulnerability Description

TOTOLINK EX1200T V4.1.2cu.5232_B20210713 was found to contain a pre-auth remote command execution vulnerability in the setUpgradeFW function through the FileName parameter.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	Ex1200T Firmware	4.1.2cu.5232_b20210713
Totolink	Ex1200T	-

Related Weaknesses (CWE)

CWE-78

References

https://locrian-lightning-dc7.notion.site/RCE2-1ad8e5e2b1a280fbb0cacc7e758e7299ExploitThird Party Advisory
https://locrian-lightning-dc7.notion.site/RCE2-1ad8e5e2b1a280fbb0cacc7e758e7299ExploitThird Party Advisory

FAQ

What is CVE-2025-28039?

CVE-2025-28039 is a vulnerability with a CVSS score of 9.8 (CRITICAL). TOTOLINK EX1200T V4.1.2cu.5232_B20210713 was found to contain a pre-auth remote command execution vulnerability in the setUpgradeFW function through the FileName parameter.

How severe is CVE-2025-28039?

CVE-2025-28039 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-28039?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink Ex1200T Firmware, Totolink Ex1200T.