A stack-based buffer overflow vulnerability exists in the boa formParentControl deviceName functionality of X2000R (version(s):… (CVE-2026-40615)
Description
A critical stack-based buffer overflow vulnerability (CVE-2026-40615) exists in the boa formParentControl deviceName functionality of the TOTOLINK X2000R router firmware version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. This vulnerability can be triggered by an authenticated HTTP request with specially crafted data, potentially allowing arbitrary code execution.
CVSS v3.1
Score 9.1critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-40615 describes a stack-based buffer overflow in the boa formParentControl deviceName functionality of the TOTOLINK X2000R router firmware version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. An attacker with authentication privileges can send a specially crafted HTTP request to exploit this vulnerability, leading to arbitrary code execution. The vulnerability has a CVSS v3.1 score of 9.1, indicating critical severity, with attack vector network, low attack complexity, requiring high privileges, no user interaction, and impacts on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary code on the affected device, potentially compromising confidentiality, integrity, and availability of the system. This could lead to full control over the device.
Mitigation Recommendations
No patch or official fix information is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, restrict access to the management interface to trusted users only and monitor for suspicious authenticated HTTP requests targeting the formParentControl deviceName functionality.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-97cf-wp6g-w5h6
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-40615"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6ad7ec142cdf04f6566aefc8
Added to database: 10/20/2026, 22:32:52 UTC
Last enriched: 10/20/2026, 22:36:59 UTC
Last updated: 10/20/2026, 23:48:14 UTC
Views: 2
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