CVE-2025-28027 — HIGH (7.3)

Vulnerability Description

TOTOLINK A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 was found to contain a buffer overflow vulnerability in downloadFile.cgi.

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	A830R Firmware	4.1.2cu.5182_b20201102
Totolink	A830R	-
Totolink	A950Rg Firmware	4.1.2cu.5161_b20200903
Totolink	A950Rg	-
Totolink	A3000Ru Firmware	5.9c.5185_b20201128
Totolink	A3000Ru	-
Totolink	A3100R Firmware	4.1.2cu.5247_b20211129
Totolink	A3100R	-

Related Weaknesses (CWE)

CWE-121

References

https://locrian-lightning-dc7.notion.site/BufferOverflow2-19e8e5e2b1a2806db38beaExploitThird Party Advisory
https://locrian-lightning-dc7.notion.site/CVE-2025-28027-BufferOverflow2-19e8e5eExploitThird Party Advisory
https://locrian-lightning-dc7.notion.site/CVE-2025-28027-BufferOverflow2-19e8e5eExploitThird Party Advisory

FAQ

What is CVE-2025-28027?

CVE-2025-28027 is a vulnerability with a CVSS score of 7.3 (HIGH). TOTOLINK A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 was found to contain a buffer overflow vulnerability in downloa...

How severe is CVE-2025-28027?

CVE-2025-28027 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-2025-28027?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A830R Firmware, Totolink A830R, Totolink A950Rg Firmware, Totolink A950Rg, Totolink A3000Ru Firmware.