CVE-2021-37439
MEDIUMCVSS 6.5/10EPSS 1.21%
Last modified
CVE-2021-37439 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. NCH FlexiServer v6.00 suffers from a syslog?file=/.. path traversal vulnerability.. EPSS estimates a 1.21% chance of exploitation in the next 30 days.
Description
NCH FlexiServer v6.00 suffers from a syslog?file=/.. path traversal vulnerability.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nch | Flexiserver | <= 6.00 |
References
- https://github.com/0xfml/poc/blob/main/NCH/Flexiserver_6.00_LFI.mdExploit, Third Party Advisory
- https://github.com/0xfml/poc/blob/main/NCH/Flexiserver_6.00_LFI.mdExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-37439?
NCH FlexiServer v6.00 suffers from a syslog?file=/.. path traversal vulnerability.
How severe is CVE-2021-37439?
CVE-2021-37439 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-37439?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-37439?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST