RCE in Realtek Gpon Router
CVE-2022-40740
Realtek GPON router has insufficient filtering for special characters. A remote attacker authenticated as an administrator can exploit this vulnerability to perform command injection attacks, to execute arbitrary system command, manipulate system or disrupt service.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (72.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: +0.000
Affected products
- Realtek Gpon Router — versions SDK 1.9
- Realtek Usdk — versions 1.0, 2.0, 2.2
- Realtek Xpon Software Development Kit — versions 1.9, 3.3, 4.0
Weakness classification (CWE)
References
- www.twcert.org.tw/tw/cp-132-6831-19121-1.html (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-40740?
- CVE-2022-40740 is a high-severity vulnerability in Realtek Gpon Router, classified under OS Command Injection. CVSS score: 7.2/10. Published 2023-01-03.
- How severe is CVE-2022-40740?
- High severity. CVSS v3 base score is 7.2 out of 10.