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Vulnerability record · CVE-2025-6393 · published 21 June 2025

CVE-2025-6393: Totolink a3002ru firmware memory buffer overflow vulnerability

TTotolink · A3002ru Firmware

A vulnerability was found in TOTOLINK A702R, A3002R, A3002RU and EX1200T 3.0.0-B20230809.1615/4.0.0-B20230531.1404/4.0.0-B20230721.1521/4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formIPv6Addr of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

7.4 CVSS 4.0 High EPSS 1.0% · top 37.6% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow
7.4CVSS 4.0 base score, v2 9.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
10References, 3 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in TOTOLINK A702R, A3002R, A3002RU and EX1200T 3.0.0-B20230809.1615/4.0.0-B20230531.1404/4.0.0-B20230721.1521/4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formIPv6Addr of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is possible to launch the attack 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: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

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

References

LinkTags
https://github.com/awindog/cve/blob/main/688/15.md ExploitThird Party Advisory
https://github.com/awindog/cve/blob/main/688/16.md ExploitThird Party Advisory
https://vuldb.com/?ctiid.313386 Permissions RequiredVDB Entry
https://vuldb.com/?id.313386 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.597565 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.597566 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.597591 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.597592 Third Party AdvisoryVDB Entry
https://www.totolink.net/ Product
https://github.com/awindog/cve/blob/main/688/15.md ExploitThird Party Advisory

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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-2025-51451Totolink ex1200t firmware improper authentication vulnerabilityIn TOTOLINK EX1200T firmware 4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm.EPSS 0.38%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 0.63%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 0.63%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 0.63%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-2025-28039Totolink ex1200t firmware os command injection vulnerabilityTOTOLINK EX1200T V4.1.2cu.5232_B20210713 was found to contain a pre-auth remote command execution vulnerability in the setUpgradeFW function through …EPSS 1.2%9.8CVE-2025-28038Totolink ex1200t firmware os command injection vulnerabilityTOTOLINK EX1200T V4.1.2cu.5232_B20210713 was found to contain a pre-auth remote command execution vulnerability in the setWebWlanIdx function through…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2025-6393), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.