CVE-2025-50399
CRITICALCVSS 9.8/10EPSS 0.37%
Last modified
CVE-2025-50399 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. FAST FAC1200R F400_FAC1200R_Q is vulnerable to Buffer Overflow in the function sub_80435780 via the parameter password.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.
Description
FAST FAC1200R F400_FAC1200R_Q is vulnerable to Buffer Overflow in the function sub_80435780 via the parameter password.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fastcom | Fac1200r Firmware | f400_fac1200r_q |
References
- https://github.com/sezangel/IOT-vul/tree/main/FAST/FAC1200R/1Exploit, Third Party Advisory
- https://github.com/sezangel/IOT-vul/tree/main/FAST/FAC1200R/1Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-50399?
FAST FAC1200R F400_FAC1200R_Q is vulnerable to Buffer Overflow in the function sub_80435780 via the parameter password.
How severe is CVE-2025-50399?
CVE-2025-50399 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.
How do I fix CVE-2025-50399?
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.
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Are you affected by CVE-2025-50399?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST