CVE-2026-96257CWE-119CWE-121

CVE-2026-96257

Critical · published September 23, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
10.0 · 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
EPSS
0.00584 · 47.2th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-09-23T07:17Z
References (5)
https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1203R-copy_msg_element · [email protected]https://vuldb.com/cve/CVE-2026-96257 · [email protected]https://vuldb.com/submit/901889 · [email protected]https://vuldb.com/vuln/408707 · [email protected]https://vuldb.com/vuln/408707/cti · [email protected]
EPSS history
Timeline
  • 24 SEP 03:25Z
    EPSS moved — → 1%
    epss
  • 23 SEP 03:00Z
    Fast FAC1203R Gigabit Edition Device Discovery Service copy_msg_element stack-based overflow
    cvelistv5