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Vulnerability record · CVE-2025-45842 · published 8 May 2025

CVE-2025-45842: Totolink nr1800x firmware out-of-bounds write vulnerability

TTotolink · Nr1800x Firmware

TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the ssid5g parameter in the setWiFiEasyCfg function.

8.8 CVSS 3.1 High EPSS 0.88% · top 42.6% CWE-787 · Out-of-bounds writeCWE-121 · Stack-based buffer overflow
8.8CVSS 3.1 base score
0.88%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

TOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the ssid5g parameter in the setWiFiEasyCfg function.

CVSS:3.1/AV:N/AC:L/PR:L/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/regainer27/CVE-key/tree/main/bo3 Exploit
https://www.totolink.net/ Product
https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/225/ids/36.html Product
https://github.com/regainer27/CVE-key/tree/main/bo3 Exploit

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Related vulnerabilities

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

9.8CVE-2025-45841Totolink nr1800x firmware out-of-bounds write vulnerabilityTOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the text parameter in the setSmsCfg function.EPSS 0.51%9.8CVE-2023-7220Totolink nr1800x firmware stack-based buffer overflow vulnerabilityA vulnerability was found in Totolink NR1800X 9.1.0u.6279_B20210910 and classified as critical. Affected by this issue is the function loginAuth of t…EPSS 1.5%9.8CVE-2023-36340Totolink nr1800x firmware out-of-bounds write vulnerabilityTOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain a stack overflow via the http_host parameter in the function loginAuth.EPSS 0.70%9.8CVE-2022-41525Totolink nr1800x firmware os command injection vulnerabilityTOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain a command injection vulnerability via the OpModeCfg function at /cgi-bin/cstecgi.cg…EPSS 1.8%9.8CVE-2022-41522Totolink nr1800x firmware out-of-bounds write vulnerabilityTOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain an unauthenticated stack overflow via the "main" function.EPSS 0.95%9.8CVE-2022-41518Totolink nr1800x firmware os command injection vulnerabilityTOTOLINK NR1800X V9.1.0u.6279_B20210910 was discovered to contain a command injection vulnerability via the UploadFirmwareFile function at /cgi-bin/c…EPSS 1.9%8.8CVE-2025-45843Totolink nr1800x firmware out-of-bounds write vulnerabilityTOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the ssid parameter in the setWiFiGuestCfg funct…EPSS 0.68%8.8CVE-2025-45844Totolink nr1800x firmware out-of-bounds write vulnerabilityTOTOLINK NR1800X V9.1.0u.6681_B20230703 was discovered to contain an authenticated stack overflow via the ssid parameter in the setWiFiBasicCfg funct…EPSS 0.68%

Source: NIST National Vulnerability Database (record CVE-2025-45842), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.