Archer VX1800v v1: Improper Neutralization of CRLF Sequences
CVE-2026-15429 is a high-severity improper neutralization of CRLF sequences vulnerability in Archer VX1800v v1 from TP-Link, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 0.16.0 2.0.0 v6092.0 Build 260521 RC.7927n as the first without the flaw, so updating Archer VX1800v v1 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.39% chance of exploitation within 30 days, higher than 73% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Archer VX1800v v1 to 0.16.0 2.0.0 v6092.0 Build 260521 RC.7927n or a later version.
- Update Archer Vx1800v Firmware to 0.16.0 or a later version.
- Read the advisory on tp-link.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| TP-Link | Archer VX1800v v1 | before 0.16.0 2.0.0 v6092.0 Build 260521 RC.7927n | 0.16.0 2.0.0 v6092.0 Build 260521 RC.7927n |
| TP-Link | Archer Vx1800v Firmware | before 0.16.0; 2.0.0 | 0.16.0 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 5.1 | Medium | CNA |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
A privilege escalation vulnerability exists in the HTTP authentication component in Archer VX1800v v1. Improper handling of user-controlled input may allow newline characters to be injected into internally constructed configuration data. An authenticated user with sufficient privileges may be able to modify account settings and gain elevated administrative privileges.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of CRLF Sequences
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
How developers prevent this class of flaw
- Appropriately filter or quote CRLF sequences in user-controlled input.
More Improper Neutralization of CRLF Sequences vulnerabilities (CWE-93)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other references
Other vulnerabilities in Archer VX1800v v1
- 8.8 High severity
- 8.1 High severity
Recent Improper Neutralization of CRLF Sequences vulnerabilities
- 8.5 High severity
- 7.5 High severity
- 7.5 High severity
- 9.1 Critical severity
- 7.5 High severity
- 9.1 Critical severity
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