Vulnerability record · CVE-2025-9780 · published 1 September 2025

CVE-2025-9780: Totolink a702r firmware memory buffer overflow vulnerability

TTotolink · A702r Firmware

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.

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/formIpQoS/formIpQoS.md	Broken Link
https://github.com/rew1X/CVE/blob/main/TOTOLINK/A702R/formIpQoS/formIpQoS.md#poc	Broken Link
https://vuldb.com/?ctiid.322082	Permissions Required
https://vuldb.com/?id.322082	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.640988	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-2025-9780), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.