High severity · published Sep 1, 2025
CVE-2025-9780
A flaw has been found in TOTOLINK A702R 4.0.0-B20211108.1423
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
A flaw has been found in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this issue is the function sub_419BE0 of the file /boafrm/formIpQoS. This manipulation of the argument mac causes buffer overflow. The attack can be initiated remotely. The exploit has been published 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
AF
A702r Firmware · Totolink
4.0.0-b20211108.1423 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9780
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9780
Broken Link
https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formIpQoS/formIpQoS.md
Broken Link
https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formIpQoS/formIpQoS.md#poc
Permissions Required
https://vuldb.com/?ctiid.322082
Third Party Advisory
https://vuldb.com/?id.322082
Third Party Advisory
https://vuldb.com/?submit.640988
Product
https://www.totolink.net/
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