What’s Vulnerable › Vulnerabilities

CVE-2025-9303: TOTOLINK A720R cstecgi.cgi setParentalRules buffer overflow

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-08-21 · updated 2026-06-17
• Weakness: CWE-119

Description

A security flaw has been discovered in TOTOLINK A720R 4.1.5cu.630_B20250509. This issue affects the function setParentalRules of the file /cgi-bin/cstecgi.cgi. Performing manipulation of the argument desc results in buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be exploited.

Affected products

• TOTOLINK A720R: 4.1.5cu.630_b20250509

References

• https://github.com/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md
• https://github.com/lin-3-start/lin-cve/blob/main/TOTOLINK%20A720R/TOTOLINK-A720R.md#poc
• https://vuldb.com/?ctiid.320908
• https://vuldb.com/?id.320908
• https://vuldb.com/?submit.632410
• https://www.totolink.net/

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