ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-5030

A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910.

Published Mar 29, 2026 · catalog updated Jun 17, 2026 · nr1800x firmware

Check if you run it

No confirmed exploitation is on record for CVE-2026-5030. EPSS is 3.71%. Act only if a listed version of nr1800x firmware is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.71%
Remediation
Advisory link
Affected products
cpe totolink/nr1800x firmware

A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe totolink/nr1800x firmware9.1.0u.6279_b20210910

How to fix CVE-2026-5030

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-5030. EPSS is 3.71%. Act only if a listed version of nr1800x firmware is installed.

Which versions are affected?

Compare what you have installed with totolink/nr1800x firmware 9.1.0u.6279_b20210910. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-74: Injection; CWE-77: Command Injection. EPSS 3.71%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 29, 2026 · NIST NVD

    Detected

    A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

  2. Jun 17, 2026 · NIST NVD

    Updated

    A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Sources

  • CVE.orgVulnerability recordCVE-2026-5030

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-5030

    30-day exploitation probability 3.7%

    first.org
  • NIST NVDVulnerability recordCVE-2026-5030

    A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be ini

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.