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Vulnerabilities

Vulnerability · CVE-2025-9935

A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506.

Published Sep 3, 2025 · catalog updated Sep 4, 2025 · Totolink N600R

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-9935. EPSS is 2.73%. Act only if a listed version of Totolink N600R is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.73%
Remediation
Vendor / distro source
Affected products
vendor Totolink N600R 4.3.0cu.7866_B20220506

A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

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.

  • vendor Totolink N600R 4.3.0cu.7866_B202205064.3.0cu.7866_B20220506

How to fix CVE-2025-9935

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-2025-9935. EPSS is 2.73%. Act only if a listed version of Totolink N600R is installed.

Which versions are affected?

Compare what you have installed with Totolink N600R 4.3.0cu.7866_B20220506 4.3.0cu.7866_B20220506. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 2.73%. 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.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 3, 2025 · EUVD

    Detected

    A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

  2. Sep 4, 2025 · EUVD

    Updated

    A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

Sources

  • CVE.orgVulnerability recordCVE-2025-9935

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-9935

    30-day exploitation probability 2.73%

    first.org
  • EUVDVulnerability recordEUVD-2025-26653

    A vulnerability was determined in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection. The attack can be executed remotely. The exploit has been p

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 25, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 25, 2026
  • CVE.orgOct 22, 2026
  • EUVDOct 22, 2026