Stack-Based Buffer Overflow in Fast FAC1900R from Vendor Fast
CVE-2026-96676

5.3MEDIUM

Key Information:

Vendor

Fast

Status
Fac1900r
Vendor
CVE Published:
23 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-96676?

A vulnerability exists in the Fast FAC1900R product, specifically within the 'get_alias_name' function of the uhttpd component. This vulnerability allows for a stack-based buffer overflow that can be exploited remotely. Attackers could potentially manipulate this flaw to execute arbitrary code, leading to unauthorized actions in affected systems. Despite the vulnerability being disclosed, the product vendor has not responded to address the issue. Public exploits are available, heightening the urgency for users to mitigate the risks.

Affected Version(s)

FAC1900R 20190827_2.0.2

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-2026-96676 - Proof of Concept

References

https://vuldb.com/vuln/408999
vdb-entrytechnical-description
https://vuldb.com/vuln/408999/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-96676
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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
.