CVE-2026-15429

Administrator escalation via configuration newline injection

Published Jul 14, 2026 · Updated Jul 14, 2026

CRLF injection in the HTTP authentication component of TP-Link Archer VX1800v v1 allows remote authenticated users to gain administrator access. The component accepts newline characters in user-controlled account fields and embeds them in internally constructed configuration data without neutralization. Access to the adjacent HTTP management interface and an authenticated low-privilege account are required to alter account settings and elevate privileges.

CVSS severity5.1
Medium
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CRLF injection in the HTTP authentication component of TP-Link Archer VX1800v v1 allows remote authenticated users to gain administrator access. The component accepts newline characters in user-controlled account fields and embeds them in internally constructed configuration data without neutralization. Access to the adjacent HTTP management interface and an authenticated low-privilege account are required to alter account settings and elevate privileges.

The record

CVE
CVE-2026-15429
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
TP-Link Systems Inc.
Product
Archer VX1800v
Classifications
CWE-93, CAPEC-137, T1068
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 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 <0.16.0 2.0.0 v6092.0 Build 260521 RC.7927n

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

TP-Link Systems Inc. · Archer VX1800vversion=0 <0.16.0 2.0.0 v6092.0 Build 260521 RC.7927n

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.1TP-Link Systems Inc.CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')
CAPEC-137Parameter Injection
T1068Exploitation for Privilege Escalation

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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