Stack-based Buffer Overflow in TOTOLINK X2000R Product
CVE-2026-28763

9.1CRITICAL

Key Information:

Vendor

Totolink
Status
Totolink
Vendor
CVE Published:
20 October 2026

What is CVE-2026-28763?

A stack-based buffer overflow vulnerability is present in the hostname functionality of the boa formMapDelDevice within the TOTOLINK X2000R. An attacker can exploit this issue by crafting a specific HTTP request, which may result in arbitrary code execution. This type of vulnerability requires that an attacker is authenticated prior to exploitation, potentially enabling them to gain unauthorized control over the system.

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
.