High severity · published Sep 1, 2025
CVE-2025-9781
TOTOLINK A702R formFilter sub_4162DC buffer overflow
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability has been found in TOTOLINK A702R 4.0.0-B20211108.1423. This affects the function sub_4162DC of the file /boafrm/formFilter. Such manipulation of the argument ip6addr leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A7
A702R · TOTOLINK
4.0.0-B20211108.1423 · source: vendor
AF
A702r Firmware · Totolink
4.0.0-b20211108.1423 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9781
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9781
Broken Link
https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formFilter/formFilter.md
Broken Link
https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formFilter/formFilter.md#poc
Permissions Required
https://vuldb.com/?ctiid.322083
Third Party Advisory
https://vuldb.com/?id.322083
Third Party Advisory
https://vuldb.com/?submit.640989
Product
https://www.totolink.net/
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