CVE-2026-15429: A privilege escalation vulnerability exists in the HTTP authentication component in Archer VX1800v v1

Q: How do I fix CVE-2026-15429?

archer vx1800v firmware: upgrade to 0.16.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-15429 being exploited?

CVE-2026-15429 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-15429 affect?

CVE-2026-15429 affects archer vx1800v firmware. Severity is high (CVSS 8.8). 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.

This month

HIGH 8.8UPGRADE

CVE-2026-15429 is a high-severity flaw (CVSS 8.8) affecting archer vx1800v firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-93
Published	2026-07-14
Last modified	2026-10-24

Publisher (CNA): TPLink · Vendor: tp-link

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-14 17:16 UTCPublished CVE record published
2026-10-24 21:10 UTCUpdated Record last modified

tp-link archer vx1800v firmware UPGRADE

Affected: < 0.16.0 · 2.0.0

Fixed in: 0.16.0

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-15429?

archer vx1800v firmware: upgrade to 0.16.0. Exact commands for each OS are on this page.

Is CVE-2026-15429 being exploited?

CVE-2026-15429 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-15429 affect?

CVE-2026-15429 affects archer vx1800v firmware. Severity is high (CVSS 8.8). 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.

How urgent is CVE-2026-15429?

Priority 49/100. High severity

Software pages

TP-Link vulnerabilities

Related CVEs

CVE-2026-15428 HIGH 8.8 UPGRADE An OS command injection vulnerability exists in Archer VX800v v1 due to insufficient input sanitization of the
CVE-2026-15427 HIGH 8.1 UPGRADE An OS command injection vulnerability exists in the TR-069 / CWMP management interface of Archer VX1800v v1 du

References

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