High severity · published Jun 21, 2025
CVE-2025-6393
TOTOLINK A702R/A3002R/A3002RU/EX1200T HTTP POST Request formIPv6Addr buffer overflow
7.5
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability was found in TOTOLINK A702R, A3002R, A3002RU and EX1200T 3.0.0-B20230809.1615/4.0.0-B20230531.1404/4.0.0-B20230721.1521/4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formIPv6Addr of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A3
A3002R · TOTOLINK
3.0.0-B20230809.1615; 4.0.0-B20230531.1404; 4.0.0-B20230721.1521; 4.1.2cu.5232_B20210713 · source: vendor
A3
A3002RU · TOTOLINK
3.0.0-B20230809.1615; 4.0.0-B20230531.1404; 4.0.0-B20230721.1521; 4.1.2cu.5232_B20210713 · source: vendor
A7
A702R · TOTOLINK
3.0.0-B20230809.1615; 4.0.0-B20230531.1404; 4.0.0-B20230721.1521; 4.1.2cu.5232_B20210713 · source: vendor
EX
EX1200T · TOTOLINK
3.0.0-B20230809.1615; 4.0.0-B20230531.1404; 4.0.0-B20230721.1521; 4.1.2cu.5232_B20210713 · source: vendor
AF
A3002r Firmware · Totolink
4.0.0-b20230531.1404 · source: NVD
AF
A3002ru Firmware · Totolink
3.0.0-b20230809.1615 · source: NVD
AF
A702r Firmware · Totolink
4.0.0-b20230721.1521 · source: NVD
EF
Ex1200t Firmware · Totolink
4.1.2cu.5232_b20210713 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6393
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-6393
Exploit
https://github.com/awindog/cve/blob/main/688/15.md
Exploit
https://github.com/awindog/cve/blob/main/688/16.md
Permissions Required
https://vuldb.com/?ctiid.313386
Third Party Advisory
https://vuldb.com/?id.313386
Third Party Advisory
https://vuldb.com/?submit.597565
Third Party Advisory
https://vuldb.com/?submit.597566
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