Authenticated OS Command Injection in TL-WR841N IPv6 WAN Configuration (CVE-2026-102294) | HOL Guard CVE

High · CVSS 8.5CVE-2026-102294

Authenticated OS Command Injection in TL-WR841N IPv6 WAN Configuration

Answer in brief

CVE-2026-102294 records a High severity (CVSS 8.5) vulnerability in Authenticated OS Command Injection in TL-WR841N IPv6 WAN Configuration. The current sources do not mark it as known exploited. The current feed maps TP-Link System Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 1, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TP-Link System Inc./TL-WR841N v14 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TP-Link System Inc./TL-WR841N v14generic	>=0 <4.19 Build 260821 (EN) \|\| >=0 <4.19 Build 260820 (US)	4.19 Build 260821 (EN), 4.19 Build 260820 (US), 4.19

Recommended response

Check inventory. Check lockfiles and deployed manifests for TP-Link System Inc./TL-WR841N v14.
Review the reported fix. Update TP-Link System Inc./TL-WR841N v14 to 4.19 Build 260821 (EN) if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 1, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.