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CVE-2025-50402

Fastcom Fac1200r Firmware buffer overflow

9.8 CRITICALPublic exploitEPSS 0.42%
  1. Published26 Nov 2025

Description

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Fastcom Fac1200r Firmwaref400_fac1200r_q

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-50402 being actively exploited?

CVE-2025-50402 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.42%.

How severe is CVE-2025-50402?

CVE-2025-50402 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.42% probability of exploitation.

Which products are affected by CVE-2025-50402?

Affected products include Fastcom Fac1200r Firmware.

How do I fix CVE-2025-50402?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-50402 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.