RCE in NETGEAR Br200
CVE-2021-27252
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the vendor_specific DHCP opcode. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12216.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (64.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
References
- kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some… (Patch, Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-21-248/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27252?
- CVE-2021-27252 is a high-severity vulnerability in NETGEAR Br200, classified under OS Command Injection. CVSS score: 8.8/10. Published 2021-04-14.
- How severe is CVE-2021-27252?
- High severity. CVSS v3 base score is 8.8 out of 10.