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CVE-2026-89052

Hardcoded AES encryption key in Archer C6

CVSS score

5.9

EPSS probability

—

Risk score

0.6

Published

2 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Hardcoded AES Encryption Key Vulnerability in Archer C6

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A hardcoded cryptographic key management vulnerability exists in Archer C6 V2 products due to a universal cryptographic key shared across devices. This can lead to the recovery of plaintext credentials from encrypted configuration files.

Why does it matter?

This vulnerability allows unauthorized attackers to obtain sensitive information and administrative credentials, and a patch is available.

What should be done?

  • Follow the vendor advisory
  • Apply available firmware updates
Chain of evidence and sources2 verified claims

Archer C6 V2 üzerinde sabit kodlanmış kriptografik anahtar yönetimi zafiyeti bulunmaktadır.

S0 · daybreach-canonicalS1 · cvelist

Başarılı istismar sonucunda idari kimlik bilgileri dahil hassas bilgiler ifşa olabilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

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.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CWE: CWE-321

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-89052 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1TP-Link Systems Inc.Archer C6 V2 View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
5.9CVSS V4_0MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:NCVE CNA
5.9CVSS V40MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

CNA çözüm referansı

Open source
reference

Yama veya çözüm referansı

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-89052 is associated with the following CWEs:

CWE-321: Common Weakness Enumeration Entry CWE-321

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-89052 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsHigh
UserGerekmiyor

Official Sources and Advisories

https://www.tp-link.com/us/support/download/archer-c6/v2/#Firmwarepatchhttps://www.tp-link.com/us/support/faq/5356/vendor-advisory

CVSS Vector Radar Chart

5.9 / 10
Attack VectorNetworkComplexityLowPrivilegesHighUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

TS
TP-Link Systems Inc. logo
TP-Link Systems Inc.

Weakness Type (CWE & CAPEC)

CWE-321

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CVE-2026-89052 · Hardcoded AES encryption key in Archer C6