CVE-2025-28020

TOTOLINK A800R V4.1.2cu.5137_B20200730 was found to contain a buffer overflow vulnerability in downloadFile.cgi through the v25 parameter.

CVSS v3.1

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

EPSS

0.38% chance of exploitation in the next 30 days, 31th percentile

Published

2025-04-23

Updated

2025-04-24

Proof-of-concept exploits (2)

• https://locrian-lightning-dc7.notion.site/BufferOverflow3-1948e5e2b1a280c28ef5c6e54b49324…
• https://locrian-lightning-dc7.notion.site/CVE-2025-28020-BufferOverflow3-1948e5e2b1a280c2…

References

• CVE Record
• NVD entry

Related

• CVE-2025-28019
• CVE-2025-28021
• CVE-2025-28018
• CVE-2025-28022
• CVE-2025-28017
• CVE-2025-28024