CVE-2021-4242

Sapido BR270n/BRC76n/GR297/RB1732 syscmd.htm os command injection

HIGH 8.8EPSS 3.1%

A vulnerability was found in Sapido BR270n, BRC76n, GR297 and RB1732 and classified as critical. Affected by this issue is some unknown functionality of the file ip/syscmd.htm. The manipulation leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-214592.

Affected: Sapido · BR270n · BRC76n · GR297 · RB1732
CVSS v3.1 NVD: 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1 VULDB: 6.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS: 3.09% chance of exploitation in the next 30 days, 88th percentile
Published: 2022-11-30
Updated: 2025-04-15

Proof-of-concept exploits (1)

https://blog.csdn.net/qq_44159028/article/details/114590267

Security advisories

smallpiggy/Sapido--rce/blob/main/Sapido%E8%B7%AF%E7%94%B1%E5%99%A8-rce.py
https://vuldb.com/?id.214592

References

CVE Record
NVD entry