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Vulnerabilities

Vulnerability · CVE-2025-4270

TOTOLINK a720r_firmware Exposure of Sensitive Information to an Unauthorized Actor

Published May 5, 2025 · catalog updated Jul 30, 2025 · Totolink A720R

Patch now

CVE-2025-4270 is in the CISA known-exploited catalog. Confirm Totolink A720R against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Medium6.9
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
14.03%
Remediation
Remediation guidance
Affected products
vendor TOTOLINK a720r_firmware · vendor Totolink A720R 4.1.5cu.374

A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown function of the file /cgi-bin/cstecgi.cgi of the component Config Handler. The manipulation of the argument topicurl with the input getInitCfg/getSysStatusCfg leads to information disclosure. It is possible to launch the attack 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.

  • vendor TOTOLINK a720r_firmwareversion unspecified
  • vendor Totolink A720R 4.1.5cu.3744.1.5cu.374

How to fix CVE-2025-4270

What to do

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

Should you patch?

CVE-2025-4270 is in the CISA known-exploited catalog. Confirm Totolink A720R against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with Totolink A720R 4.1.5cu.374 4.1.5cu.374. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 14.03%. The CISA KEV listing is the exploitation evidence. 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. Jul 30, 2025 · VulnCheck KEV

    Detected

    A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown function of the file /cgi-bin/cstecgi.cgi of the component Config Handler. The manipulation of the argument topicurl with the input getInitCfg/getSysStatusCfg leads to information disclosure. It is possible to launch the attack remotely. The exploit has been disclosed to the publi

  2. Jul 30, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2025-4270

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4270

    30-day exploitation probability 14.0%

    first.org
  • EUVDVulnerability recordEUVD-2025-14980

    A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown function of the file /cgi-bin/cstecgi.cgi of the component Config Handler. The manipulation of the argument topicurl with the input getInitCfg/getSysStatusCfg le

    euvd.enisa.europa.eu
  • VulnCheck KEVConfirmed exploitationCVE-2025-4270

    A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown function of the file /cgi-bin/cstecgi.cgi of the component Config Handler. The manipulation of the argument topicurl with the input getInitCfg/getSysStatusCfg le

    vulncheck.com

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.