What is CVE-2024-1783?

CVE-2024-1783 is a critical-severity vulnerability in Totolink Lr1200gb, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2024-02-23.

How severe is CVE-2024-1783?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2024-1783 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Totolink Lr1200gb

CVE-2024-1783

A vulnerability classified as critical has been found in Totolink LR1200GB 9.1.0u.6619_B20230130/9.3.5u.6698_B20230810. Affected is the function loginAuth of the file /cgi-bin/cstecgi.cgi of the component Web Interface. The manipulation of the argument http_host leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-254574 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Vulnerability class: Buffer Overflow

Published 2024-02-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (80.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Totolink Lr1200gb — versions 9.1.0u.6619_B20230130, 9.3.5u.6698_B20230810
Totolink Lr1200gb Firmware — versions 9.1.0u.6619_b20230130, 9.3.5u.6698_b20230810

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

Public proof-of-concept exploits

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
gist.github.com/manishkumarr1017/30bca574e2f0a6d6336115ba71111984 (Exploit, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2024-1783?: CVE-2024-1783 is a critical-severity vulnerability in Totolink Lr1200gb, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2024-02-23.
How severe is CVE-2024-1783?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-1783 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.