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  4. CVE 2026 76653 missing authentication in vpn configuration
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-76653

Missing Authentication in VPN Configuration Management in TP-Link TL-MR6400 and Archer MR600CVE-2026-76653

Answer in brief

CVE-2026-76653 records a Medium severity (CVSS 5.3) vulnerability in Missing Authentication in VPN Configuration Management in TP-Link TL-MR6400 and Archer MR600. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./Archer MR600 (generic), TP-Link Systems Inc./TL-MR6400 v8 (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 Sep 10, 2026Updated Sep 11, 2026Source checked Oct 25, 2026First seen by HOL Sep 10, 2026Material review Sep 11, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.3. 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 MR600 (generic), TP-Link Systems Inc./TL-MR6400 v8 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
TP-Link Systems Inc./Archer MR600generic>=v3 <MR600(EU)_V3_1.4.0 Build 260827 || >=v2 <MR600(EU)_V2_1.12.0 Build 2600826MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V2_1.12.0 Build 2600826, MR600(EU)_V3_1.4.0, MR600(EU)_V2_1.12.0
TP-Link Systems Inc./TL-MR6400 v8generic>=0 <1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n, 1.5.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for TP-Link Systems Inc./Archer MR600, TP-Link Systems Inc./TL-MR6400 v8.
  2. 2Review the reported fix. Update TP-Link Systems Inc./Archer MR600 to MR600(EU)_V3_1.4.0 Build 260827; TP-Link Systems Inc./TL-MR6400 v8 to 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 10, 2026

Sources and claim methodology

  • Source referencetp-link.com
  • Source referencetp-link.com
  • Source referencetp-link.com
Upstream source description

A missing authentication vulnerability in the VPN configuration management has been identified in Archer MR600 (v2, v3 & v5) and TL-MR6400 v8 due to improper access control; a remote unauthenticated attacker may be able to access and modify VPN configuration information without valid credentials. Successful exploitation may allow a remote unauthenticated attacker to disclose and modify VPN configuration information.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-126
Source
CVE List V5
Source checked
Oct 25, 2026
References
3 linked sources
Open source record