Vulnerability in M-Files Web
CVE-2021-37253
M-Files Web before 20.10.9524.1 allows a denial of service via overlapping ranges (in HTTP requests with crafted Range or Request-Range headers). NOTE: this is disputed because the range behavior is the responsibility of the web server, not the responsibility of the individual web application
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.029 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.m-files.com/company/trust-center/vulnerability-disclosure/ (Vendor Advisory)
- seclists.org/fulldisclosure/2021/Dec/1 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/165139/M-Files-Web-Denial-Of-Service.html (Exploit, VDB Entry, Third Party Advisory)
- www.tenable.com/cve/CVE-2021-37253 (Exploit, Third Party Advisory)
- vulmon.com/vulnerabilitydetails (Exploit, Third Party Advisory)
- www.m-files.com/about/trust-center/security-advisories/cve-2021-37253-denial-of… (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-37253?
- CVE-2021-37253 is a high-severity vulnerability in M-Files Web, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 7.5/10. Published 2021-12-05.
- How severe is CVE-2021-37253?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-37253 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.