CVE-2026-1668: The web interface on multiple Omada switches does not adequately validate certain external inputs, which may l

Q: How do I fix CVE-2026-1668?

omada sg2005p-pd firmware: upgrade to 1.0.19; omada sg2008 firmware: upgrade to 4.20.17, 4.30.1; omada sg2008p firmware: upgrade to 3.20.17, 3.30.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-1668 being exploited?

CVE-2026-1668 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-2026-1668 affect?

CVE-2026-1668 affects omada sg2005p-pd firmware, omada sg2008 firmware, omada sg2008p firmware. Severity is critical (CVSS 9.8). The web interface on multiple Omada switches does not adequately validate certain external inputs, which may lead to out-of-bound memory access when processing crafted requests. Under specific conditions, this flaw may result in unintended

Q: How urgent is CVE-2026-1668?

Priority 55/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2026-1668 is a critical-severity flaw (CVSS 9.8) affecting omada sg2005p-pd firmware, omada sg2008 firmware, omada sg2008p firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The web interface on multiple Omada switches does not adequately validate certain external inputs, which may lead to out-of-bound memory access when processing crafted requests. Under specific conditions, this flaw may result in unintended command execution.<br>An unauthenticated attacker with network access to the affected interface may cause memory corruption, service instability, or information disclosure. Successful exploitation may allow r

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-20, CWE-787
Published	2026-03-13
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

2026-03-13 19:53 UTCPublished CVE record published
2026-06-17 10:16 UTCUpdated Record last modified

tp-link omada sg2005p-pd firmware UPGRADE

Affected: >= 1.0.0 and < 1.0.19

Fixed in: 1.0.19

Safe to downgrade to: a release before 1.0.0

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 omada sg2008 firmware UPGRADE

Affected: >= 4.20.0 and < 4.20.17 · >= 4.30.0 and < 4.30.1

Fixed in: 4.20.17, 4.30.1

Safe to downgrade to: a release before 4.20.0

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 omada sg2008p firmware UPGRADE

Affected: >= 3.20.0 and < 3.20.17 · >= 3.30.0 and < 3.30.1

Fixed in: 3.20.17, 3.30.1

Safe to downgrade to: a release before 3.20.0

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 omada sg2016p firmware UPGRADE

Affected: >= 1.20.0 and < 1.20.17 · >= 1.30.0 and < 1.30.1

Fixed in: 1.20.17, 1.30.1

Safe to downgrade to: a release before 1.20.0

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 omada sg2210mp firmware UPGRADE

Affected: >= 4.20.0 and < 4.20.18 · >= 5.0.0 and < 5.0.15 · >= 5.20.0 and < 5.20.1

Fixed in: 4.20.18, 5.0.15, 5.20.1

Safe to downgrade to: a release before 4.20.0

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 omada sg2210p firmware UPGRADE

Affected: >= 5.20.0 and < 5.20.18 · >= 5.30.0 and < 5.30.1

Fixed in: 5.20.18, 5.30.1

Safe to downgrade to: a release before 5.20.0

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.

Exact fixes by distribution

Fedora 46 · php-pecl-yac · FIXED · 3.0.2-1.fc46 · FEDORA-2026-0322a78385 · source

sudo dnf upgrade --advisory=FEDORA-2026-0322a78385

Fedora ELN · openldap · FIXED · 2.6.16-1.eln159 · FEDORA-2026-4b30c86326 · source

sudo dnf upgrade --advisory=FEDORA-2026-4b30c86326

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: tangrs/cve-2026-1668-poc (4 stars)
GitHub PoC: wuyou6956-glitch/cve-2026-1668-poc (0 stars)

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-2026-1668?

omada sg2005p-pd firmware: upgrade to 1.0.19; omada sg2008 firmware: upgrade to 4.20.17, 4.30.1; omada sg2008p firmware: upgrade to 3.20.17, 3.30.1. Exact commands for each OS are on this page.

Is CVE-2026-1668 being exploited?

CVE-2026-1668 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-2026-1668 affect?

CVE-2026-1668 affects omada sg2005p-pd firmware, omada sg2008 firmware, omada sg2008p firmware. Severity is critical (CVSS 9.8). The web interface on multiple Omada switches does not adequately validate certain external inputs, which may lead to out-of-bound memory access when processing crafted requests. Under specific conditions, this flaw may result in unintended

How urgent is CVE-2026-1668?

Priority 55/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

TP-Link vulnerabilities

References

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