CVE-2021-4463highCWE-22CWE-552

CVE-2021-4463: high-severity vulnerability in Shenzhen Longjing Technology Co. Ltd. BEMS API

Longjing Technology BEMS API <= 1.21 Remote Arbitrary File Download

Published · Updated

36Vexday Risk Score

Patch soon. It has a working public exploit.

ssvc Attendcvss 8.7epss 1.6%
exploitation probability
1.6%top 25% of all CVEs
observed exploitation
nono source reports it
Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint. The 'fileName' parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
Shenzhen Longjing Technology Co. Ltd. · BEMS API
References
https://cxsecurity.com/issue/WLB-2021070173https://exchange.xforce.ibmcloud.com/vulnerabilities/206477https://packetstormsecurity.com/files/163702https://web.archive.org/web/20220527162453/http://www.ljkj2012.com/https://www.exploit-db.com/exploits/50163https://www.vulncheck.com/advisories/longjing-technology-bems-api-remote-arbitrary-file-downloadhttps://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5657.php