Vulnerability · Published Sep 28, 2026 · Assigned by VulDB

CVE-2026-101037FAST FAC1200R devdiscover Service parse_advertisement_frame stack-based overflow

Critical 9.9

In plain English

A critical-severity stack buffer overflow in FAC1200R from FAST. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.5%top 60.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
FAST	FAC1200R	5.0_20201119_1.0.2

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-410905 | FAST FAC1200R devdiscover Service parse_advertisement_frame stack-based overflow vdb-entry, technical-description
VDB-410905 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-101037 | CVE Analysis and Report third-party-advisory
Submit #927154 | FAST FAC1200R V5.0_20201119_1.0.2 Stack-based Buffer Overflow third-party-advisory
https://github.com/xiaobor123/vuls-find-VxWorks/tree/main/vul-find-FAST_FAC1200R-copy_msg_element/vul-find-FAST_FAC1200R-copy_msg_element exploit