Is CVE-2026-9033 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-9033 being exploited in the wild.

How severe is CVE-2026-9033?

Medium severity, with a CVSS score of 4.3, published 20 August 2026.

Which products and versions are affected?

TP-Link Deco BE23 US V1; TP-Link Deco BE25 US V1; TP-Link Deco BE25-Outdoor US V1; TP-Link Deco BE65 EU V1, V3; and 6 more.

Is there a fix for CVE-2026-9033?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-9033 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-9033?

Check whether you run TP-Link Deco BE23, TP-Link Deco BE25, TP-Link Deco BE25-Outdoor or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-9033: TP-Link Deco captive portal session termination denial of service

CVE-2026-9033 · Severity: medium · CVSS 4.3 · Published 2026-08-20

TP-Link Deco mesh WiFi routers include a captive portal service that manages guest network access and authentication. An unauthenticated attacker with network access can remotely terminate active captive portal sessions, forcing users to re-authenticate and causing temporary service disruption for legitimate guests on affected networks.

Technologies: TP-Link Deco BE23, TP-Link Deco BE25, TP-Link Deco BE65, TP-Link Deco BE65 Pro, TP-Link Deco BE65-PoE, TP-Link Deco BE85. Vendors: TP-Link.

Quick answers

Is CVE-2026-9033 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-9033 being exploited in the wild.
How severe is CVE-2026-9033?: Medium severity, with a CVSS score of 4.3, published 20 August 2026.
Which products and versions are affected?: TP-Link Deco BE23 US V1; TP-Link Deco BE25 US V1; TP-Link Deco BE25-Outdoor US V1; TP-Link Deco BE65 EU V1, V3; and 6 more.
Is there a fix for CVE-2026-9033?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-9033 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9033?: Check whether you run TP-Link Deco BE23, TP-Link Deco BE25, TP-Link Deco BE25-Outdoor or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a denial-of-service flaw in the captive portal service of affected TP-Link Deco mesh WiFi systems. An unauthenticated network-adjacent attacker can send requests to terminate individual or all active captive portal sessions without authentication. The attack requires only network connectivity to the captive portal service (typically the router itself or guest network). Successful exploitation forces targeted users to re-authenticate, disrupting access temporarily but not compromising authentication credentials or persistent data. Patches should be available through TP-Link firmware updates.

Affected products

TP-Link Deco BE25 US V1
TP-Link Deco BE23 US V1
TP-Link Deco BE85 EU V1, V3
TP-Link Deco BE65 EU V1, V3
TP-Link Deco BE65 Pro EU V1
TP-Link Deco BE65-PoE EU V1
TP-Link Deco BE25-Outdoor US V1
TP-Link Deco WB14400 US V1
TP-Link Deco WB7200 US V1
TP-Link Deco WB10800 US V1

Timeline

2026-08-20: disclosed: CVE-2026-9033 published on NVD

References

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