CVE-2026-4611: A flaw has been found in TOTOLINK X6000R 9.4.0cu.1360_B20241207/9.4.0cu.1498_B20250826

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HIGH 7.2MITIGATE

CVE-2026-4611 is a high-severity flaw (CVSS 7.2) affecting x6000r firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw has been found in TOTOLINK X6000R 9.4.0cu.1360_B20241207/9.4.0cu.1498_B20250826. Affected by this issue is the function setLanCfg of the file /usr/sbin/shttpd. Executing a manipulation of the argument Hostname can lead to os command injection. The attack may be launched remotely.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	3.1% (top 12%)
CISA exploited list	No
Weakness	CWE-77, CWE-78
Published	2026-03-23
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: totolink

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 22:16 UTCPublished CVE record published
2026-06-17 10:56 UTCUpdated Record last modified

totolink x6000r firmware MITIGATE

Affected: 9.4.0cu.1360_b20241207 · 9.4.0cu.1498_b20250826

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.4.0cu.1360_b20241207

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-2026-4611?

x6000r firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-4611 being exploited?

CVE-2026-4611 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-2026-4611 affect?

CVE-2026-4611 affects x6000r firmware. Severity is high (CVSS 7.2). A flaw has been found in TOTOLINK X6000R 9.4.0cu.1360_B20241207/9.4.0cu.1498_B20250826. Affected by this issue is the function setLanCfg of the file /usr/sbin/shttpd. Executing a manipulation of the argument Hostname can lead to os command

How urgent is CVE-2026-4611?

Priority 47/100. High severity

References

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