Buffer overflow in Fast Fac1203r
CVE-2026-101354
A security flaw has been discovered in FAST FAC1203R 20200116_2.0.4. The affected element is the function _tWlanTask of the component MmtAtePrase Parser. Performing a manipulation results in stack-based buffer overflow. The attacker must have access to the local network to execute the attack. The exploit has been released to the public and may be used for attacks. 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 9.6 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Fast Fac1203r — versions 20200116_2.0.4
Weakness classification (CWE)
References
- vuldb.com/vuln/411088 (technical-description, vdb-entry)
- vuldb.com/vuln/411088/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-101354 (third-party-advisory)
- vuldb.com/submit/927238 (third-party-advisory)
- github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1203R-twlant… (exploit)
Frequently asked questions
- What is CVE-2026-101354?
- CVE-2026-101354 is a critical-severity vulnerability in Fast Fac1203r, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.6/10. Published 2026-09-29.
- How severe is CVE-2026-101354?
- Critical severity. CVSS v3 base score is 9.6 out of 10.