Unsigned firmware accepted by TOTOLINK X2000R router
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-347.
Summary
TOTOLINK X2000R firmware version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327 is affected by a flaw in its boa Firmware Update functionality. The device accepts unsigned firmware (CWE-347), so a specially crafted firmware binary can lead to an arbitrary firmware update. An attacker with high privileges can trigger it over the network with an authenticated HTTP request.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
A Unsigned Firmware vulnerability exists in the boa Firmware Update functionality of X2000R (version(s): TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). A specially crafted firmware binary can lead to arbitrary firmware update. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Totolink.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-21 Threatist record created from CVE-2026-10141
- 2026-10-21 Alias added: GHSA-hvg9-6xm4-6qvj
- 2026-10-22 Priority changed: MEDIUM → LOW
- 2026-10-23 CISA SSVC decision points changed
- 2026-10-24 Priority changed: LOW → MEDIUM
References
More TOTOLINK vulnerabilities
- TI-2023-25090 An issue in TOTOLINK A3700R v.9.1.2u.6165_20211012 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
- TI-2026-80926 TOTOLINK A950RG stack-based overflow in infostat.cgi via CONTENT_LENGTH CVSS 4.0CRITICAL 10.0
- TI-2026-79142 Command injection in TOTOLINK A950RG UploadCustomModule function CVSS 4.0CRITICAL 10.0
- TI-2026-79031 TOTOLINK EX200 setWiFiAclAddConfig stack-based buffer overflow CVSS 4.0CRITICAL 10.0
- TI-2026-79012 Stack-based buffer overflow in TOTOLINK EX200 setStaticDhcpConfig CVSS 4.0CRITICAL 10.0
- TI-2026-67719 Stack-based overflow in Totolink A3002MU QoS rule handler CVSS 4.0CRITICAL 10.0
Sources
- CVE-2026-10141 · CVE Program
- CVE-2026-10141 · NVD
- FIRST EPSS
- GHSA-hvg9-6xm4-6qvj · GitHub Advisory Database · CC BY 4.0
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