CVE-2022-44255
CWE-787Published: November 23, 2022· Updated: Jun 17, 2026
Official Description
TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post data.
Risk Analysis
TOTOLINK LR350 firmware contains a pre-authentication buffer overflow vulnerability triggered by long POST data. This allows an unauthenticated attacker to potentially execute code or crash the device.
No public exploit is known, and it is not in the CISA KEV catalog. It is remotely exploitable with low attack complexity.
Update the device firmware to a version that addresses this buffer overflow and restrict access to the device management interface.
Technical Analysis
CVE-2022-44255 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-44255 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts