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Vulnerability record · CVE-2025-45788 · published 8 May 2025

CVE-2025-45788: Totolink a3100r firmware out-of-bounds write vulnerability

TTotolink · A3100r Firmware

TOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow via the comment parameter in setMacFilterRules.

9.8 CVSS 3.1 Critical EPSS 0.79% · top 45.5% CWE-787 · Out-of-bounds writeCWE-121 · Stack-based buffer overflow
9.8CVSS 3.1 base score
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

TOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow via the comment parameter in setMacFilterRules.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3100R-2/README.md Exploit

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Related vulnerabilities

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

9.8CVE-2025-45789Totolink a3100r firmware out-of-bounds write vulnerabilityTOTOLINK A3100R V5.9c.1527 is vulnerable to buffer overflow via the urlKeyword parameter in setParentalRules.EPSS 0.79%9.8CVE-2025-45790Totolink a3100r firmware out-of-bounds write vulnerabilityTOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow via the priority parameter in the setMacQos interface of /lib/cste_modules/firewall.so.EPSS 0.79%9.8CVE-2025-45787Totolink a3100r firmware out-of-bounds write vulnerabilityTOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow viathe comment parameter in setIpPortFilterRules.EPSS 0.79%9.8CVE-2025-28035Totolink a830r firmware os command injection vulnerabilityTOTOLINK A830R V4.1.2cu.5182_B20201102 was found to contain a pre-auth remote command execution vulnerability in the setNoticeCfg function through th…EPSS 1.3%9.8CVE-2025-28036Totolink a950rg firmware os command injection vulnerabilityTOTOLINK A950RG V4.1.2cu.5161_B20200903 was found to contain a pre-auth remote command execution vulnerability in the setNoticeCfg function through t…EPSS 1.3%9.8CVE-2025-28034Totolink a800r firmware os command injection vulnerabilityTOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5…EPSS 1.3%9.8CVE-2025-28256Totolink a3100r firmware os command injection vulnerabilityAn issue in TOTOLINK A3100R V4.1.2cu.5247_B20211129 allows a remote attacker to execute arbitrary code via the setWebWlanIdx of the file /lib/cste_mo…EPSS 0.95%9.8CVE-2024-42547Totolink a3100r firmware classic buffer overflow vulnerabilityTOTOLINK A3100R V4.1.2cu.5050_B20200504 has a buffer overflow vulnerability in the http_host parameter in the loginauth function.EPSS 0.63%

Source: NIST National Vulnerability Database (record CVE-2025-45788), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.