Vulnerability record · CVE-2026-96257 · published 23 September 2026

CVE-2026-96257: Memory buffer overflow vulnerability

A flaw has been found in Fast FAC1203R Gigabit Edition 2.0.4. Affected by this issue is the function copy_msg_element of the component Device Discovery Service. Executing a manipulation can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

9.3 CVSS 4.0 Critical EPSS 0.58% · top 54.3% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred

9.3CVSS 4.0 base score, v2 10.0

0.58%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

5References

23 Sep 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1203R-copy_msg_element
https://vuldb.com/cve/CVE-2026-96257
https://vuldb.com/submit/901889
https://vuldb.com/vuln/408707
https://vuldb.com/vuln/408707/cti

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Source: NIST National Vulnerability Database (record CVE-2026-96257), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.