What is CVE-2024-36650?

CVE-2024-36650 is a high-severity vulnerability in Totolink A3100r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2024-06-11.

How severe is CVE-2024-36650?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Totolink A3100r

CVE-2024-36650

TOTOLINK AC1200 Wireless Dual Band Gigabit Router firmware A3100R V4.1.2cu.5247_B20211129, in the cgi function `setNoticeCfg` of the file `/lib/cste_modules/system.so`, the length of the user input string `NoticeUrl` is not checked. This can lead to a buffer overflow, allowing attackers to construct malicious HTTP or MQTT requests to cause a denial-of-service attack.

Vulnerability class: Buffer Overflow

Published 2024-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Totolink A3100r
Totolink A3100r Firmware — versions 4.1.2cu.5247_b20211129

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

gist.github.com/Swind1er/f442fcac520a48c05c744c7b72362483 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-36650?: CVE-2024-36650 is a high-severity vulnerability in Totolink A3100r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2024-06-11.
How severe is CVE-2024-36650?: High severity. CVSS v3 base score is 7.5 out of 10.