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CVE-2025-11091 (GCVE-0-2025-11091)

Vulnerability from cvelistv5 – Published: 2025-09-28 01:32 – Updated: 2025-09-29 14:48
VLAI
Title
Tenda AC21 SetStaticRouteCfg sscanf buffer overflow
Summary
A security flaw has been discovered in Tenda AC21 up to 16.03.08.16. Affected by this vulnerability is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be exploited.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-29 14:48 UTC
CWE
References
URL Tags
https://vuldb.com/?id.326173 vdb-entrytechnical-description
https://vuldb.com/?ctiid.326173 signaturepermissions-required
https://vuldb.com/?submit.661806 third-party-advisory
https://github.com/maximdevere/CVE2/issues/2 exploitissue-tracking
https://www.tenda.com.cn/ product
Impacted products
Vendor Product Version CPE status
Tenda AC21 Affected: 16.03.08.0
Affected: 16.03.08.1
Affected: 16.03.08.2
Affected: 16.03.08.3
Affected: 16.03.08.4
Affected: 16.03.08.5
Affected: 16.03.08.6
Affected: 16.03.08.7
Affected: 16.03.08.8
Affected: 16.03.08.9
Affected: 16.03.08.10
Affected: 16.03.08.11
Affected: 16.03.08.12
Affected: 16.03.08.13
Affected: 16.03.08.14
Affected: 16.03.08.15
Affected: 16.03.08.16
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Show details on NVD website

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              "value": "Es wurde eine Schwachstelle in Tenda AC21 up to 16.03.08.16 entdeckt. Dabei geht es um die Funktion sscanf der Datei /goform/SetStaticRouteCfg. Dank Manipulation des Arguments list mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff l\u00e4sst sich \u00fcber das Netzwerk starten. Der Exploit ist \u00f6ffentlich verf\u00fcgbar und k\u00f6nnte genutzt werden."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "baseScore": 8.7,
                "baseSeverity": "HIGH",
                "vectorString": "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",
                "version": "4.0"
              }
            },
            {
              "cvssV3_1": {
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "vectorString": "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",
                "version": "3.1"
              }
            },
            {
              "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": "2025-09-28T01:32:10.696Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-326173 | Tenda AC21 SetStaticRouteCfg sscanf buffer overflow",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/?id.326173"
            },
            {
              "name": "VDB-326173 | CTI Indicators (IOB, IOC, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/?ctiid.326173"
            },
            {
              "name": "Submit #661806 | Shenzhen Tenda Technology Co.,Ltd. AC21 \u003c= V16.03.08.16 Buffer Overflow",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/?submit.661806"
            },
            {
              "tags": [
                "exploit",
                "issue-tracking"
              ],
              "url": "https://github.com/maximdevere/CVE2/issues/2"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://www.tenda.com.cn/"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2025-09-27T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2025-09-27T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2025-09-27T07:31:48.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "Tenda AC21 SetStaticRouteCfg sscanf buffer overflow"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2025-11091",
        "datePublished": "2025-09-28T01:32:10.696Z",
        "dateReserved": "2025-09-27T05:26:44.839Z",
        "dateUpdated": "2025-09-29T14:48:57.508Z",
        "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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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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