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.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.3 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
mitreCNA
---
---
CISA-ADPADP
7.3 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 31%
VendorProductVersion
totolinka800r_firmware
4.1.2cu.5137_b20200730:cu.5137_b20200730
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://locrian-lightning-dc7.notion.site/BufferOverflow3-1948e5e2b1a280c28ef5c6e54b49324d?pvs=73
https://locrian-lightning-dc7.notion.site/CVE-2025-28020-BufferOverflow3-1948e5e2b1a280c28ef5c6e54b49324d