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CVE-2025-50399VulnerabilityPublished Updated

CVE-2025-50399: n/a

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
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:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 2026-10-25.

What to do

AI-suggested

In the absence of available patches, European organizations should implement immediate compensating controls. These include isolating the FAST FAC1200R devices within segmented network zones with strict access control lists (ACLs) to limit exposure to untrusted networks. Deploy network intrusion detection and prevention systems (IDS/IPS) tuned to detect anomalous traffic patterns targeting the password parameter or unusual buffer overflow signatures. Enforce strong monitoring and logging on these devices to identify suspicious activities early. Engage with the vendor for timely patch releases and apply updates as soon as they become available. Conduct thorough asset inventories to identify all instances of the affected device and prioritize remediation efforts accordingly. Additionally, consider deploying application-layer firewalls or proxy solutions to filter malicious payloads targeting this vulnerability. Regularly train security teams on emerging threats related to buffer overflows and maintain incident response plans tailored to network device compromises.

Description

FAST FAC1200R F400_FAC1200R_Q is vulnerable to Buffer Overflow in the function sub_80435780 via the parameter password.

References

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