CVE-2025-57623 — MEDIUM (5.3)

Vulnerability Description

A NULL pointer dereference in TOTOLINK N600R firmware v4.3.0cu.7866_B2022506 allows attackers to cause a Denial of Service.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Totolink	N600R Firmware	4.3.0cu.7866_b2022506
Totolink	N600R	-

Related Weaknesses (CWE)

CWE-476

References

https://gist.github.com/z472421519/d17061ea79a72d39fe69c000fa1a6280ExploitThird Party Advisory
https://github.com/z472421519/BinaryAudit/blob/main/PoC/NPD/TOTOLink/CONTENT_LENExploit

FAQ

What is CVE-2025-57623?

CVE-2025-57623 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A NULL pointer dereference in TOTOLINK N600R firmware v4.3.0cu.7866_B2022506 allows attackers to cause a Denial of Service.

How severe is CVE-2025-57623?

CVE-2025-57623 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-57623?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink N600R Firmware, Totolink N600R.