Is CVE-2025-4270 actively exploited?

Yes. KEV Intelligence tracks CVE-2025-4270 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2025-4270. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2025-4270 affects TOTOLINK A720R. Reported affected version: 4.1.5cu.374.

No. CVE-2025-4270 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2025-4270

TOTOLINK A720R Config cstecgi.cgi information disclosure

TOTOLINK / A720R · 4.1.5cu.374

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Severity: CVSS 6.9 · Medium
Confidence: High
Exploit status: Exploited in the wild
EPSS: 13.1%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2025-4270 is an unauthenticated TOTOLINK A720R Config cstecgi.cgi information disclosure. A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

TOTOLINK / A720R 4.1.5cu.374.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

A vulnerability was found in 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.

Es wurde eine problematische Schwachstelle in TOTOLINK A720R 4.1.5cu.374 ausgemacht. Betroffen hiervon ist ein unbekannter Ablauf der Datei /cgi-bin/cstecgi.cgi der Komponente Config Handler. Dank Manipulation des Arguments topicurl mit der Eingabe getInitCfg/getSysStatusCfg mit unbekannten Daten kann eine information disclosure-Schwachstelle ausgenutzt werden. Umgesetzt werden kann der Angriff über das Netzwerk. Der Exploit steht zur öffentlichen Verfügung.

Vendor Product Affected Status

TOTOLINK A720R 4.1.5cu.374 Affected

View vendor advisory

Published: 05 May 2025
Exploitation Reported: 05 May 2025
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2025-4270
Submit #563442 | TOTOLINK A720R V4.1.5cu.374 Exposure of Sensitive System Information to an Unauthorized Cont vuldb.com · Third-Party Advisory https://vuldb.com/?submit.563442
GitHub — at0de/my_vulns github.com · Exploit https://github.com/at0de/my_vulns/blob/main/TOTOLINK/A720R/getSysStat...
VDB-307374 | TOTOLINK A720R Config cstecgi.cgi information disclosure vuldb.com · Technical Description https://vuldb.com/?id.307374
Product — totolink.net totolink.net · Product https://www.totolink.net/
VDB-307374 | CTI Indicators (IOB, IOC, TTP, IOA) vuldb.com · Signature https://vuldb.com/?ctiid.307374
GitHub — at0de/my_vulns github.com · Related https://github.com/at0de/my_vulns/blob/main/TOTOLINK/A720R/getInitCfg.md

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 05 May 2025

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
The Shadowserver First	2025-05-05 07:31 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

6.9 Medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS

13.1%

Weaknesses

Exposure of Sensitive Information to an Unauthorized Actor CWE-200 Improper Access Control CWE-284

All CVSS Scores

CVSS v4.0 6.9 Medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS v3.1 5.3 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.0 5.3 Medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v2.0 5.0 Medium

AV:N/AC:L/Au:N/C:P/I:N/A:N

Timeline

From disclosure to observed exploitation

05 May 2025
CVE published

Vulnerability disclosed publicly
05 May 2025
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
04 May 2025
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2025-4270

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2025-4270",
  "confidence": "High",
  "cvss_score": 6.9,
  "cvss_estimated": false,
  "epss_score": 0.13125,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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