CVE-2026-9033: An unauthenticated attacker with network access to the captive portal service of an affected device can termin

Q: How do I fix CVE-2026-9033?

er7212pc firmware: upgrade to 2.4.3; er605 firmware: upgrade to 2.4.4; er7206 firmware: upgrade to 2.3.5. Exact commands for each OS are on this page.

Q: Is CVE-2026-9033 being exploited?

CVE-2026-9033 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-2026-9033 affect?

CVE-2026-9033 affects er7212pc firmware, er605 firmware, er7206 firmware. Severity is medium (CVSS 4.3). An unauthenticated attacker with network access to the captive portal service of an affected device can terminate active captive portal sessions, including forcing logout of specific users or clearing all active sessions. Affected users mus

Q: How urgent is CVE-2026-9033?

Priority 20/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADEUPGRADEUPGRADE

CVE-2026-9033 is a medium-severity flaw (CVSS 4.3) affecting er7212pc firmware, er605 firmware, er7206 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An unauthenticated attacker with network access to the captive portal service of an affected device can terminate active captive portal sessions, including forcing logout of specific users or clearing all active sessions. Affected users must re-authenticate to regain access. Successful exploitation may allow termination of individual or all active captive portal sessions, causing temporary service disruption and requiring users to re-authenti

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-08-20
Last modified	2026-10-26

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

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-20 19:17 UTCPublished CVE record published
2026-10-26 10:10 UTCUpdated Record last modified

tp-link er7212pc firmware UPGRADE

Affected: < 2.4.3

Fixed in: 2.4.3

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 er605 firmware UPGRADE

Affected: < 2.4.4

Fixed in: 2.4.4

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 er7206 firmware UPGRADE

Affected: < 2.3.5

Fixed in: 2.3.5

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 er7406 firmware UPGRADE

Affected: < 1.3.4

Fixed in: 1.3.4

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 er707-m2 firmware UPGRADE

Affected: < 1.4.4

Fixed in: 1.4.4

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 er7412-m2 firmware UPGRADE

Affected: < 1.2.0

Fixed in: 1.2.0

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-2026-9033?

er7212pc firmware: upgrade to 2.4.3; er605 firmware: upgrade to 2.4.4; er7206 firmware: upgrade to 2.3.5. Exact commands for each OS are on this page.

Is CVE-2026-9033 being exploited?

CVE-2026-9033 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-2026-9033 affect?

CVE-2026-9033 affects er7212pc firmware, er605 firmware, er7206 firmware. Severity is medium (CVSS 4.3). An unauthenticated attacker with network access to the captive portal service of an affected device can terminate active captive portal sessions, including forcing logout of specific users or clearing all active sessions. Affected users mus

How urgent is CVE-2026-9033?

Priority 20/100. No elevated risk signals yet.

Software pages

TP-Link vulnerabilities

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References

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