CVE-2025-15517: A missing authentication check in the HTTP server on TP-Link Archer NX200, NX210, NX500 and NX600 to certain c

Q: How do I fix CVE-2025-15517?

archer nx600 firmware: upgrade to 1.3.0, 1.4.0; archer nx500 firmware: upgrade to 1.3.0, 1.5.0; archer nx210 firmware: upgrade to 1.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-15517 being exploited?

CVE-2025-15517 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-2025-15517 affect?

CVE-2025-15517 affects archer nx600 firmware, archer nx500 firmware, archer nx210 firmware. Severity is high (CVSS 8.1). A missing authentication check in the HTTP server on TP-Link Archer NX200, NX210, NX500 and NX600 to certain cgi endpoints allows unauthenticated access intended for authenticated users. An attacker may perform privileged HTTP actions witho

This month

HIGH 8.1UPGRADEUPGRADEUPGRADE

CVE-2025-15517 is a high-severity flaw (CVSS 8.1) affecting archer nx600 firmware, archer nx500 firmware, archer nx210 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A missing authentication check in the HTTP server on TP-Link Archer NX200, NX210, NX500 and NX600 to certain cgi endpoints allows unauthenticated access intended for authenticated users. An attacker may perform privileged HTTP actions without authentication, including firmware upload and configuration operations.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.1% (top 12%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-03-23
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-23 18:16 UTCPublished CVE record published
2026-06-17 08:37 UTCUpdated Record last modified

tp-link archer nx600 firmware UPGRADE

Affected: < 1.3.0 · < 1.4.0

Fixed in: 1.3.0, 1.4.0

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.

tp-link archer nx500 firmware UPGRADE

Affected: < 1.5.0 · < 1.3.0

Fixed in: 1.3.0, 1.5.0

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.

tp-link archer nx210 firmware UPGRADE

Affected: < 1.3.0

Fixed in: 1.3.0

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.

tp-link archer nx200 firmware UPGRADE

Affected: < 1.3.0 · < 1.8.0

Fixed in: 1.3.0, 1.8.0

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-2025-15517?

archer nx600 firmware: upgrade to 1.3.0, 1.4.0; archer nx500 firmware: upgrade to 1.3.0, 1.5.0; archer nx210 firmware: upgrade to 1.3.0. Exact commands for each OS are on this page.

Is CVE-2025-15517 being exploited?

CVE-2025-15517 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-2025-15517 affect?

CVE-2025-15517 affects archer nx600 firmware, archer nx500 firmware, archer nx210 firmware. Severity is high (CVSS 8.1). A missing authentication check in the HTTP server on TP-Link Archer NX200, NX210, NX500 and NX600 to certain cgi endpoints allows unauthenticated access intended for authenticated users. An attacker may perform privileged HTTP actions witho

How urgent is CVE-2025-15517?

Priority 50/100. High severity

Software pages

TP-Link vulnerabilities

Related CVEs

CVE-2025-15605 HIGH 7.3 UPGRADE UPGRADE A hardcoded cryptographic key within the configuration mechanism on TP-Link Archer NX200, NX210, NX500 and NX6
CVE-2025-15519 HIGH 7.2 UPGRADE UPGRADE Improper input handling in a modem-management administrative CLI command on TP-Link Archer NX200, NX210, NX500
CVE-2025-15518 HIGH 7.2 UPGRADE UPGRADE Improper input handling in a wireless-control administrative CLI command on TP-Link Archer NX200, NX210, NX500

References

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