CVE-2025-57623

Name: CVE-2025-57623
Creator: NVD / NIST
Published: 2025-09-25T18:15:43.997+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2025-57623 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A NULL pointer dereference in TOTOLINK N600R firmware v4.3.0cu.7866_B2022506 allows attackers to cause a Denial of Service.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.36%

27.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Totolink	N600r Firmware	4.3.0cu.7866_b2022506

References

https://gist.github.com/z472421519/d17061ea79a72d39fe69c000fa1a6280Exploit, Third Party Advisory
https://github.com/z472421519/BinaryAudit/blob/main/PoC/NPD/TOTOLink/CONTENT_LENGTH.mdExploit

Timeline

Published: Sep 25, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-57623?

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 a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2025-57623?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-57623?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST