CVE-2025-28020 — HIGH (7.3)

Vulnerability Description

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

CVSS Score

7.3

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Totolink	A800R Firmware	4.1.2cu.5137_b20200730
Totolink	A800R	-

Related Weaknesses (CWE)

CWE-120

References

https://locrian-lightning-dc7.notion.site/BufferOverflow3-1948e5e2b1a280c28ef5c6ExploitThird Party Advisory
https://locrian-lightning-dc7.notion.site/CVE-2025-28020-BufferOverflow3-1948e5eExploitThird Party Advisory

FAQ

What is CVE-2025-28020?

CVE-2025-28020 is a vulnerability with a CVSS score of 7.3 (HIGH). TOTOLINK A800R V4.1.2cu.5137_B20200730 was found to contain a buffer overflow vulnerability in downloadFile.cgi through the v25 parameter.

How severe is CVE-2025-28020?

CVE-2025-28020 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-28020?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A800R Firmware, Totolink A800R.