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Vulnerability record · CVE-2025-4835 · published 17 May 2025

CVE-2025-4835: Totolink a702r firmware memory buffer overflow vulnerability

TTotolink · A702r Firmware

A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formWlanRedirect of the component HTTP POST Request Handler. The manipulation of the argument redirect-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

8.7 CVSS 4.0 High EPSS 0.81% · top 44.7% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow
8.7CVSS 4.0 base score, v2 9.0
0.81%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formWlanRedirect of the component HTTP POST Request Handler. The manipulation of the argument redirect-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

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:X/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

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

References

LinkTags
https://github.com/CH13hh/tmp_store_cc/blob/main/toto/13.md Broken Link
https://vuldb.com/?ctiid.309301 Permissions RequiredVDB Entry
https://vuldb.com/?id.309301 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.574608 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.

9.8CVE-2025-55591Totolink a3002r firmware command injection vulnerabilityTOTOLINK-A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability in the devicemac parameter in the formMapDel endpoi…EPSS 7.6%9.8CVE-2025-45863Totolink a3002r firmware classic buffer overflow vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the macstr parameter in the formMapDelDevice interface.EPSS 0.61%9.8CVE-2025-45861Totolink a3002r firmware classic buffer overflow vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the routername parameter in the formDnsv6 interface.EPSS 0.61%9.8CVE-2025-45865Totolink a3002r firmware classic buffer overflow vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the dnsaddr parameter in the formDhcpv6s interface.EPSS 0.61%9.8CVE-2025-45858Totolink a3002r firmware os command injection vulnerabilityTOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability via the FUN_00459fdc function.EPSS 11%9.8CVE-2025-25579Totolink a3002r firmware os command injection vulnerabilityTOTOLINK A3002R V4.0.0-B20230531.1404 is vulnerable to Command Injection in /bin/boa via bandstr.EPSS 10%9.8CVE-2024-34195Totolink a3002r firmware out-of-bounds write vulnerabilityTOTOLINK AC1200 Wireless Router A3002R Firmware V1.1.1-B20200824 is vulnerable to Buffer Overflow. In the boa server program's CGI handling function …EPSS 0.94%9.8CVE-2024-34198Totolink a3002ru firmware classic buffer overflow vulnerabilityTOTOLINK AC1200 Wireless Router A3002RU V2.1.1-B20230720.1011 is vulnerable to Buffer Overflow. The formWlEncrypt CGI handler in the boa program fail…EPSS 0.66%

Source: NIST National Vulnerability Database (record CVE-2025-4835), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.