RCE in Sercomm H500s
CVE-2021-44080
A Command Injection vulnerability in httpd web server (setup.cgi) in SerComm h500s, FW: lowi-h500s-v3.4.22 allows logged in administrators to arbitrary OS commands as root in the device via the connection_type parameter of the statussupport_diagnostic_tracing.json endpoint.
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: 0.249 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.249 · newest: 0.249 · change: 0.000
Affected products
- Sercomm H500s
- Sercomm H500s Firmware — versions lowi-h500s-v3.4.22
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.sercomm.com (Vendor Advisory)
- research.nccgroup.com/2022/05/24/technical-advisory-sercomm-h500s-authenticated… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-44080?
- CVE-2021-44080 is a high-severity vulnerability in Sercomm H500s, classified under OS Command Injection. CVSS score: 7.2/10. Published 2022-06-02.
- How severe is CVE-2021-44080?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2021-44080 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.