Buffer overflow in Fast Fac1200r
CVE-2026-101037
A vulnerability was found in FAST FAC1200R 5.0_20201119_1.0.2. Affected is the function parse_advertisement_frame of the component devdiscover Service. The manipulation results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Fast Fac1200r — versions 5.0_20201119_1.0.2
Weakness classification (CWE)
References
- github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1200R-copy_m… (exploit)
- vuldb.com/cve/CVE-2026-101037 (third-party-advisory)
- vuldb.com/submit/927154 (third-party-advisory)
- vuldb.com/vuln/410905 (technical-description, vdb-entry)
- vuldb.com/vuln/410905/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-101037?
- CVE-2026-101037 is a critical-severity vulnerability in Fast Fac1200r, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.9/10. Published 2026-09-28.
- How severe is CVE-2026-101037?
- Critical severity. CVSS v3 base score is 9.9 out of 10.