Vulnerability · Published Sep 1, 2025 · Assigned by VulDB
CVE-2025-9779TOTOLINK A702R formFilter sub_4162DC buffer overflow
High 8.8
In plain English
A high-severity buffer overflow in A702R from TOTOLINK. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.7%top 46.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability was detected in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this vulnerability is the function sub_4162DC of the file /boafrm/formFilter. The manipulation of the argument ip6addr results in buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.
Affected products (as reported)
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-322081 | TOTOLINK A702R formFilter sub_4162DC buffer overflow vdb-entry, technical-description
- VDB-322081 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #640987 | TOTOLINK A720R V4.0.0-B20211108.1423 Buffer Overflow third-party-advisory
- https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formFilter/formFilter.md related
- https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formFilter/formFilter.md#poc exploit
- https://www.totolink.net/ product