Path Traversal in Os4ed Opensis
CVE-2021-40651
OS4Ed OpenSIS Community 8.0 is vulnerable to a local file inclusion vulnerability in Modules.php (modname parameter), which can disclose arbitrary file from the server's filesystem as long as the application has access to the file.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.179 (97.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.179 · newest: 0.179 · change: 0.000
Affected products
- Os4ed Opensis — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- youtu.be/wFwlbXANRCo (Exploit, Third Party Advisory)
- github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-C… (Exploit, Third Party Advisory)
- www.exploit-db.com/exploits/50259 (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-40651?
- CVE-2021-40651 is a medium-severity vulnerability in Os4ed Opensis, classified under Path Traversal. CVSS score: 6.5/10. Published 2021-09-29.
- How severe is CVE-2021-40651?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-40651 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.