PT-2025-20419 · Totolink · Totolink A3100R

Sunnyyangyaya · Published 2025-04-07 · Updated 2025-05-08 · CVE-2025-45790

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions TOTOLINK A3100R version 5.9c.1527

Description The issue is related to a Buffer Overflow that can be triggered via the priority parameter in the setMacQos interface of /lib/cste modules/firewall.so. This can be accessed through the API endpoint /lib/cste modules/firewall.so.

Recommendations For TOTOLINK A3100R version 5.9c.1527, as a temporary workaround, consider restricting access to the setMacQos interface in /lib/cste modules/firewall.so to minimize the risk of exploitation. Avoid using the priority parameter in the affected interface until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Stack Overflow

Weakness Enumeration

CWE-787

CWE-121

Related Identifiers

BDU:2025-05624

CVE-2025-45790

Affected Products

Totolink A3100R

References · 7

• 🔥 https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3100R-4/README.md · Exploit
• https://bdu.fstec.ru/vul/2025-05624 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-45790 · Security Note
• https://osv.dev/vulnerability/CVE-2025-45790 · Vendor Advisory
• https://t.me/cvetracker/23393 · Telegram Post
• https://t.me/cvedetector/24863 · Telegram Post
• https://twitter.com/CVEnew/status/1920595176478945740 · Twitter Post