Medium · CVSS 5.9CVE-2026-89052

Hardcoded AES encryption key in Archer C6CVE-2026-89052

Answer in brief

CVE-2026-89052 records a Medium severity (CVSS 5.9) vulnerability in Hardcoded AES encryption key in Archer C6. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./Archer C6 V2 (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 21, 2026Updated Oct 21, 2026Source checked Oct 25, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.9. 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 Systems Inc./Archer C6 V2 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TP-Link Systems Inc./Archer C6 V2generic	>=0 <1.2.1 Build 260902	1.2.1 Build 260902, 1.2.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for TP-Link Systems Inc./Archer C6 V2.
Review the reported fix. Update TP-Link Systems Inc./Archer C6 V2 to 1.2.1 Build 260902 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 21, 2026

Sources and claim methodology

Upstream source description

A hardcoded cryptographic key management vulnerability exists in Archer C6 due to the use of a universal cryptographic key shared across devices. An attacker who obtains an encrypted configuration file or other protected credential data can recover plaintext credentials. Successful exploitation may allow unauthorized disclosure of sensitive information, including administrative credentials.

Quoted source text, attributed separately from HOL analysis.