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CVE-2025-4270 (GCVE-0-2025-4270)

Vulnerability from cvelistv5 – Published: 2025-05-05 07:31 – Updated: 2025-05-05 13:20
VLAI Shadowserver Previdian
Title
TOTOLINK A720R Config cstecgi.cgi information disclosure
Summary
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.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-05 13:17 UTC
CWE
Impacted products
Vendor Product Version CPE status
TOTOLINK A720R Affected: 4.1.5cu.374
guessed Create a notification for this product.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2025-4270

Status: Confirmed

Status Updated: 2026-07-18 00:00 UTC

Exploited: Yes


Characteristics
Severity: 53.0

Timestamps
First Seen: 2025-07-30
Asserted: 2025-07-30
Last Seen: 2026-07-18

Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Totolink / Totolink A720R | Class: router | Severity: Medium (CVSS 5.3) | IoT: yes | In CISA KEV: no | Honeypot connections on 2026-07-18: 10

Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver


Details
1D 1
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class router
7D Avg 1
Vendor Totolink
30D Avg 2
90D Avg 1
Product Totolink A720R
Cisa Kev no
Connections 10
Observation Date 2026-07-18
Vulnerability Class CVSS
Vulnerability Score 5.3
Vulnerability Severity Medium

References

Created: 2026-06-30 09:23 UTC | Updated: 2026-07-20 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2025-4270

Status: Confirmed

Status Updated: 2025-05-05 07:31 UTC

Exploited: Yes


Timestamps
First Seen: 2025-05-05
Asserted: 2025-05-05

Scope
Notes: KEVIntel entry: TOTOLINK A720R Config cstecgi.cgi information disclosure | Affected: TOTOLINK / A720R | CVSS: 6.9 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel


Details
Feed KEVIntel (kevintel.com)
Title TOTOLINK A720R Config cstecgi.cgi information disclosure
Vendor TOTOLINK
Product A720R
Added Date 2025-05-05T07:31:07.000Z
Cvss Score 6.9
Epss Score None
Cvss Severity MEDIUM
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True

References

Created: 2026-06-23 14:04 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website

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                {
                  "cweId": "CWE-200",
                  "description": "Information Disclosure",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-284",
                  "description": "Improper Access Controls",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-05T07:31:07.013Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-307374 | TOTOLINK A720R Config cstecgi.cgi information disclosure",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/?id.307374"
            },
            {
              "name": "VDB-307374 | CTI Indicators (IOB, IOC, TTP, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/?ctiid.307374"
            },
            {
              "name": "Submit #563442 | TOTOLINK A720R V4.1.5cu.374 Exposure of Sensitive System Information to an Unauthorized Cont",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/?submit.563442"
            },
            {
              "tags": [
                "related"
              ],
              "url": "https://github.com/at0de/my_vulns/blob/main/TOTOLINK/A720R/getInitCfg.md"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/at0de/my_vulns/blob/main/TOTOLINK/A720R/getSysStatusCfg.md"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://www.totolink.net/"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2025-05-04T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2025-05-04T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2025-05-04T20:30:07.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "TOTOLINK A720R Config cstecgi.cgi information disclosure"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2025-4270",
        "datePublished": "2025-05-05T07:31:07.013Z",
        "dateReserved": "2025-05-04T18:24:51.372Z",
        "dateUpdated": "2025-05-05T13:20:24.606Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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