Vulnerability record · CVE-2025-9779 · published 1 September 2025

CVE-2025-9779: Totolink a702r firmware memory buffer overflow vulnerability

TTotolink · A702r Firmware

A vulnerability was detected in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this vulnerability is the function sub_4162DC 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.

7.4 CVSS 4.0 High EPSS 0.66% · top 49.7% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow

7.4CVSS 4.0 base score, v2 9.0

0.66%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References

26 Sep 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

TA702r Firmware Totolink

References

Link	Tags
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	Broken Link
https://vuldb.com/?ctiid.322081	Permissions Required
https://vuldb.com/?id.322081	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.640987	Third Party AdvisoryVDB Entry
https://www.totolink.net/	Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-9779), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.