CVE-2025-57623

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

CVSS v3.1

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

EPSS

0.39% chance of exploitation in the next 30 days, 32th percentile

Published

2025-09-25

Updated

2025-09-26

Proof-of-concept exploits (2)

• https://gist.github.com/z472421519/d17061ea79a72d39fe69c000fa1a6280
• z472421519/BinaryAudit/blob/main/PoC/NPD/TOTOLink/CONTENT_LENGTH.md

References

• CVE Record
• NVD entry

Related

• CVE-2025-5762
• CVE-2025-5763
• CVE-2025-5761
• CVE-2025-57636
• CVE-2025-5759
• CVE-2025-5764