Stack-based Buffer Overflow in FAST FAC1200R Device by FAST
CVE-2026-101037

9.4CRITICAL

Key Information:

Vendor

Fast

Status
Fac1200r
Vendor
CVE Published:
28 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-101037?

A stack-based buffer overflow has been identified in the FAST FAC1200R 5.0_20201119_1.0.2, specifically within the parse_advertisement_frame function of the devdiscover Service. This vulnerability allows attackers to manipulate the system remotely, posing significant risks to the integrity and availability of the device. Existence of this exploit in the public domain highlights the importance of immediate remediation measures. Despite early notification to the vendor, no response was received regarding this critical issue.

Affected Version(s)

FAC1200R 5.0_20201119_1.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-101037 - Proof of Concept

References

https://vuldb.com/vuln/410905
vdb-entrytechnical-description
https://vuldb.com/vuln/410905/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-101037
third-party-advisory

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

xiaobor123 (VulDB User)
VulDB CNA Team
.