Authenticated OS Command Injection in TL-WR841N IPv6 WAN Configuration
Priority MEDIUM 41CWE-78Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
TP-Link TL-WR841N contains an authenticated OS command injection vulnerability in the IPv6 WAN configuration. A crafted IPv6 Gateway value is improperly incorporated into a system command, allowing an authenticated administrator to execute arbitrary operating system commands. Successful exploitation may allow unauthorized access to sensitive information, modification of device configuration or services, and disruption of device operation.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00946 61st percentileScored 2026-11-07
Fix Fixed TL-WR841N v14 (TP-Link System Inc.): 4.19 Build 260821 (EN), 4.19 Build 260820 (US)
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TP-Link System Inc. | TL-WR841N v14 | before 4.19 Build 260821 (EN); before 4.19 Build 260820 (US) | 4.19 Build 260821 (EN), 4.19 Build 260820 (US) | Patch available | CNA |
- TL-WR841N v14 VendorTP-Link System Inc. Affected before 4.19 Build 260821 (EN); before 4.19 Build 260820 (US) Fixed in 4.19 Build 260821 (EN), 4.19 Build 260820 (US) Patch available CNA
Remediation
- Fix · CNA TL-WR841N v14 (TP-Link System Inc.) Fixed in 4.19 Build 260821 (EN), 4.19 Build 260820 (US)
Timeline
- 2026-10-02 Threatist record created from CVE-2026-102294
- 2026-10-03 Alias added: GHSA-f292-ffrv-823x
References
More TP-Link System Inc. vulnerabilities
- TI-2026-56252 Unauthenticated Account Information Disclosure in Multiple Omada Controllers CVSS 4.0MEDIUM 6.9
- TI-2026-74509 Missing authorization in TP-Link Omada Controller MSP mode CVSS 4.0HIGH 7.5
- TI-2025-10706 UPnP DOS in TL-WR940N V6 CVSS 4.0HIGH 7.1
- TI-2026-69751 Plaintext storage of device private key in Tapo S505 firmware CVSS 4.0MEDIUM 5.4
- TI-2026-53559 Pre-Authentication Multipart Boundary Buffer Overflow in HTTP Service in TP-Link TL-WR841N CVSS 4.0MEDIUM 5.3
- TI-2026-53558 Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841N CVSS 4.0MEDIUM 5.3
Sources
- CVE-2026-102294 · CVE Program
- CVE-2026-102294 · NVD
- FIRST EPSS
- GHSA-f292-ffrv-823x · GitHub Advisory Database · CC BY 4.0
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