Vulnerability-Lookup

VAR-202507-2554

Vulnerability from variot - Updated: 2025-08-15 05:32

A vulnerability was found in TOTOLINK A702R 4.0.0-B20230721.1521. It has been classified as critical. This affects an unknown part of the file /boafrm/formPortFw of the component HTTP POST Request Handler. The manipulation of the argument service_type leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. TOTOLINK of A702R The firmware contains a buffer error vulnerability and a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. The TOTOLINK A702R is a router manufactured by TOTOLINK. An attacker could exploit this vulnerability by remotely crafting malicious data to trigger a buffer overflow, causing a denial of service or arbitrary code execution

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CVE-2025-8139 (GCVE-0-2025-8139)

Vulnerability from cvelistv5 – Published: 2025-07-25 08:32 – Updated: 2025-07-25 12:54

Title

TOTOLINK A702R HTTP POST Request formPortFw buffer overflow

Summary

Severity ?

8.7 (High)


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

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

8.8 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

CWE

CWE-120 - Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB

References

URL

Tags

	https://vuldb.com/?id.317535	vdb-entrytechnical-description
	https://vuldb.com/?ctiid.317535	signaturepermissions-required
	https://vuldb.com/?submit.620485	third-party-advisory
	https://github.com/panda666-888/vuls/blob/main/to…	exploit
	https://www.totolink.net/	product

Impacted products

	Vendor	Product	Version
	TOTOLINK	A702R	Affected: 4.0.0-B20230721.1521

Credits

panda_0x1 (VulDB User)

Show details on NVD website

JSON

To clipboard

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                "role": "CISA Coordinator",
                "timestamp": "2025-07-25T12:54:19.536399Z",
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        {
          "cvssV3_0": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 9,
            "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-25T08:32:09.407Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-317535 | TOTOLINK A702R HTTP POST Request formPortFw buffer overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.317535"
        },
        {
          "name": "VDB-317535 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.317535"
        },
        {
          "name": "Submit #620485 | TOTOLINK A702R V4.0.0-B20230721.1521 Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.620485"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/panda666-888/vuls/blob/main/totolink/a702r/formPortFw.md"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.totolink.net/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-07-24T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2025-07-24T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2025-07-24T18:02:52.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "TOTOLINK A702R HTTP POST Request formPortFw buffer overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-8139",
    "datePublished": "2025-07-25T08:32:09.407Z",
    "dateReserved": "2025-07-24T15:57:34.458Z",
    "dateUpdated": "2025-07-25T12:54:26.632Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

VAR-202507-2554

CVE-2025-8139 (GCVE-0-2025-8139)

Tags

Sightings

Nomenclature