Critical severity · published Sep 14, 2026
CVE-2026-90608
Totolink A3002MU boa formPortFw buffer overflow
9.9
CVSS
0.9%
EPSS
No
On KEV
Description
A flaw has been found in Totolink A3002MU Hh-B20211125.1046. The affected element is the function formPortFw of the file /boafrm/formPortFw of the component boa. This manipulation of the argument service_type causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A3
A3002MU · Totolink
Hh-B20211125.1046 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90608
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90608
github.com
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3002MU/bof-formPortFw.md
vuldb.com
https://vuldb.com/cve/CVE-2026-90608
vuldb.com
https://vuldb.com/submit/914016
vuldb.com
https://vuldb.com/vuln/403190
vuldb.com
https://vuldb.com/vuln/403190/cti
www.totolink.net
https://www.totolink.net/
More from A3002MU
10.0
CVE-2026-105285
Totolink A3002MU QoS Rule formIpQoS stack-based overflow
10.0
CVE-2026-105284
Totolink A3002MU Authentication Check boa sub_40FCFC improper authorization
10.0
CVE-2026-93741
Totolink A3002MU formWlWds buffer overflow
10.0
CVE-2026-93740
Totolink A3002MU formWlEncrypt buffer overflow
9.9
CVE-2026-93742
Totolink A3002MU formWsc command injection