CVE-2025-50402: Classic Buffer Overflow
Source CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 09:15 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 26 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
1. Implement strict network segmentation to isolate FAST FAC1200R devices from untrusted networks and limit exposure to potential attackers. 2. Employ access control lists (ACLs) and firewall rules to restrict management interface access to trusted IP addresses only. 3. Monitor network traffic for unusual patterns or attempts to exploit the fac_password parameter, using intrusion detection/prevention systems (IDS/IPS) with custom signatures if possible. 4. Disable or restrict remote management interfaces if not required, or enforce VPN access with strong authentication for remote administration. 5. Conduct thorough inventory and asset management to identify all FAST FAC1200R devices in the environment. 6. Engage with the vendor for updates or patches and apply them immediately once available. 7. Prepare incident response plans specific to network device compromise scenarios. 8. Consider deploying virtual patching techniques via network security appliances to block exploit attempts until official patches are released.
Description
FAST FAC1200R F400_FAC1200R_Q is vulnerable to Buffer Overflow in the function sub_80435780 via the parameter string fac_password.