CVE-2026-96257 Fast FAC1203R Gigabit Edition - Buffer Overflow

Fast FAC1203R Gigabit Edition 2.0.4 contains a stack-based buffer overflow caused by improper handling in copy_msg_element function of Device Discovery Service, letting remote attackers execute code, exploit requires network access.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.58% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-119

Vendor fix

Update to the latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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