CVE-2026-101039CWE-119CWE-121

CVE-2026-101039

Critical · published September 28, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
54.2
In the wild
Unconfirmed
What it is

A vulnerability was identified in FAST FAC1900R 20190827_2.0.2. Affected by this issue is the function copy_msg_element of the component devdiscover Service. Such manipulation leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might 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
0.00743 · 54.2th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-09-28T15:16Z
References (5)
https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1900R-copy_msg_element(2) · [email protected]https://vuldb.com/cve/CVE-2026-101039 · [email protected]https://vuldb.com/submit/927251 · [email protected]https://vuldb.com/vuln/410907 · [email protected]https://vuldb.com/vuln/410907/cti · [email protected]
EPSS history
Timeline
  • 30 SEP 03:24Z
    EPSS moved — → 1%
    epss
  • 28 SEP 10:45Z
    FAST FAC1900R devdiscover Service copy_msg_element stack-based overflow
    cvelistv5