CVE-2025-63462: a7000r Stack Overflow — Exploit

Description

Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the wifiOff parameter in the sub_421A04 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
totolink	a7000r_firmware	All
totolink	a7000r	All

References

Exploits

https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/A7000/3/1.md https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/A7000/3/1.md

Frequently Asked Questions

What is CVE-2025-63462? +

Totolink A7000R v9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the wifiOff parameter in the sub_421A04 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-63462? +

CVE-2025-63462 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-63462? +

CVE-2025-63462 affects products from totolink, specifically: a7000r, a7000r_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-63462? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-63462