CVE-2025-9779: TOTOLINK A702R formFilter sub_4162DC buffer overflow

Published Sep 1, 2025
·
Updated

A vulnerability was detected in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this vulnerability is the function sub4162DC 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 Software

3 affected components
TOTOLINK A702R
All of the following
TOTOLINK A702r Firmware=4.0.0-b20211108.1423
TOTOLINK A702R

Event History

Sep 1, 2025
CVE Published
via MITRE·12:32 PM
Data Sourced
via MITRE·12:32 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·01:15 PM
DescriptionSeverityWeaknessAffected Software
Feb 28, 57989
Event
via FIRST·05:16 AM
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2025-9779?

CVE-2025-9779 is classified as a high-severity vulnerability due to its potential for remote exploitation.

2

How do I fix CVE-2025-9779?

To fix CVE-2025-9779, update your TOTOLINK A702R device to the latest firmware version provided by the vendor.

3

What does CVE-2025-9779 affect?

CVE-2025-9779 affects the TOTOLINK A702R router, specifically the function sub_4162DC in the formFilter file.

4

What type of vulnerability is CVE-2025-9779?

CVE-2025-9779 is a buffer overflow vulnerability that can be triggered by manipulating the ip6addr argument.

5

Can CVE-2025-9779 be exploited remotely?

Yes, CVE-2025-9779 can be exploited remotely, allowing attackers to potentially execute arbitrary code.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203