CVE-2026-5511

Diagnostic command syntax disclosure via invalid input

Published May 19, 2026 · Updated May 19, 2026

Information disclosure in TP-Link Archer AX72 (SG) v1 before 1.4.6 allows local users with administrative privileges to view diagnostic syntax. The network diagnostic feature improperly processes invalid input and returns the diagnostic utility's valid command-line syntax and options. Administrative authentication to the router management interface is required, and disclosure is limited to utility presence and usage rather than sensitive system data.

CVSS severity4.6
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in TP-Link Archer AX72 (SG) v1 before 1.4.6 allows local users with administrative privileges to view diagnostic syntax. The network diagnostic feature improperly processes invalid input and returns the diagnostic utility's valid command-line syntax and options. Administrative authentication to the router management interface is required, and disclosure is limited to utility presence and usage rather than sensitive system data.

The record

CVE
CVE-2026-5511
Published
May 19, 2026
Updated
May 19, 2026
Vendor
TP-Link Systems Inc.
Product
Archer AX72
Classifications
CWE-209, CAPEC-54, T1518
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.6 Build 20260112 rel.66206

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

TP-Link Systems Inc. · Archer AX72version=0 <1.4.6 Build 20260112 rel.66206

Published CVSS scores

4.6TP-Link Systems Inc.CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
2.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
CAPEC-54Query System for Information
T1518Software Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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