Arbitrary File Write Vulnerability in X2000R by TOTOLINK
CVE-2026-9827

9.1CRITICAL

Key Information:

Vendor

Totolink
Status
Totolink
Vendor
CVE Published:
20 October 2026

What is CVE-2026-9827?

An arbitrary file write vulnerability has been identified within the boa formUploadFile functionality of the X2000R device. This vulnerability allows an attacker, through an authenticated HTTP request, to exploit the system with a specially crafted request, potentially leading to arbitrary code execution. If left unaddressed, this flaw poses significant risks to devices operating on the affected firmware version.

Affected Version(s)

Totolink TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

References

https://talosintelligence.com/vulnerability_reports/TALOS...

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Discovered by Lilith Wyatt of Cisco Talos
.