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Vulnerability record · CVE-2025-12258 · published 27 October 2025

CVE-2025-12258: Totolink a3300r firmware memory buffer overflow vulnerability

TTotolink · A3300r Firmware

A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. Impacted is the function setOpModeCfg of the file /cgi-bin/cstecgi.cg of the component POST Parameter Handler. The manipulation of the argument opmode results in stack-based buffer overflow. The attack may be performed from remote.

8.7 CVSS 4.0 High EPSS 0.94% · top 40.5% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
8.7CVSS 4.0 base score, v2 9.0
0.94%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. Impacted is the function setOpModeCfg of the file /cgi-bin/cstecgi.cg of the component POST Parameter Handler. The manipulation of the argument opmode results in stack-based buffer overflow. The attack may be performed from remote.

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

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

References

LinkTags
https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setOpModeCfg.md ExploitThird Party Advisory
https://vuldb.com/?ctiid.329929 Permissions Required
https://vuldb.com/?id.329929 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.673725 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-2026-31178Totolink a3300r firmware os command injection vulnerabilityAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stunMaxAlive par…EPSS 1.4%9.8CVE-2026-31181Totolink a3300r firmware os command injection vulnerabilityAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stunServerAddr p…EPSS 1.4%9.8CVE-2026-31175Totolink a3300r firmware command injection vulnerabilityAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stunEnable param…EPSS 1.4%9.8CVE-2026-31177Totolink a3300r firmware os command injection vulnerabilityAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stunMinAlive par…EPSS 1.4%9.8CVE-2026-31170Totolink a3300r firmware command injection vulnerabilityAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stun-pass parame…EPSS 1.4%9.8CVE-2025-52046Totolink a3300r firmware command injection vulnerabilityTotolink A3300R V17.0.0cu.596_B20250515 was found to contain a command injection vulnerability in the sub_4197C0 function via the mac and desc parame…EPSS 5.5%9.8CVE-2024-24325Totolink a3300r firmware os command injection vulnerabilityTOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the enable parameter in the setParentalRules …EPSS 1.7%9.8CVE-2024-24326Totolink a3300r firmware os command injection vulnerabilityTOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the arpEnable parameter in the setStaticDhcpR…EPSS 1.6%

Source: NIST National Vulnerability Database (record CVE-2025-12258), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.