PT-2025-17653 · Totolink · Totolink A810R

Published 2025-04-23 · Updated 2025-04-28 · CVE-2025-28021

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions TOTOLINK A810R version 4.1.2cu.5182 B20201026

Description A buffer overflow issue was discovered in the downloadFile.cgi, specifically through the v14 and v3 parameters.

Recommendations For TOTOLINK A810R version 4.1.2cu.5182 B20201026, as a temporary workaround, consider restricting access to the downloadFile.cgi endpoint until a patch is available. Avoid using the v14 and v3 parameters in the affected endpoint until the issue is resolved.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2025-10009

CVE-2025-28021

Affected Products

Totolink A810R

References · 9

• 🔥 https://locrian-lightning-dc7.notion.site/BufferOverflow1-1948e5e2b1a280e8aa5ad87964c5cd3d?pvs=73 · Exploit
• 🔥 https://locrian-lightning-dc7.notion.site/CVE-2025-28021-BufferOverflow1-1948e5e2b1a280e8aa5ad87964c5cd3d · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-28021 · Security Note
• https://osv.dev/vulnerability/CVE-2025-28021 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-10009 · Security Note
• https://vuldb.com/?id.306021 · Note
• https://twitter.com/cracbot/status/1916809693441171671 · Twitter Post
• https://twitter.com/CVEnew/status/1915091922470961197 · Twitter Post
• https://t.me/cvedetector/23614 · Telegram Post