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CVE-2025-20743 (GCVE-0-2025-20743)

Vulnerability from cvelistv5 – Published: 2025-11-04 06:19 – Updated: 2026-02-26 17:47
VLAI
Summary
In clkdbg, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10136671; Issue ID: MSV-4651.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-05 04:55 UTC
CWE
Show details on NVD website

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      "status": "final",
      "title": "CVE-2025-20743",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-20743.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "LOW",
                  "baseScore": 4.2,
                  "baseSeverity": "MEDIUM",
                  "confidentialityImpact": "LOW",
                  "integrityImpact": "LOW",
                  "privilegesRequired": "HIGH",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-20743",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-11-04T21:07:47.807568Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-11-04T21:05:32.258Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "MT2718, MT6761, MT6765, MT6768, MT6781, MT6853, MT6877, MT6886, MT6893, MT6897, MT6899, MT6983, MT6989, MT6991, MT8113, MT8163, MT8168, MT8169, MT8183, MT8186, MT8188, MT8195, MT8196, MT8321, MT8365, MT8385, MT8390, MT8391, MT8512, MT8516, MT8519, MT8676, MT8678, MT8695, MT8696, MT8698, MT8755, MT8766, MT8768, MT8771, MT8775, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8797, MT8798, MT8873, MT8883, MT8893",
              "vendor": "MediaTek, Inc.",
              "versions": [
                {
                  "status": "affected",
                  "version": "Android 14.0, 15.0, 16.0"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In clkdbg, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10136671; Issue ID: MSV-4651."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-416",
                  "description": "CWE-416 Use After Free",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-11-04T06:19:57.990Z",
            "orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
            "shortName": "MediaTek"
          },
          "references": [
            {
              "url": "https://corp.mediatek.com/product-security-bulletin/November-2025"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
        "assignerShortName": "MediaTek",
        "cveId": "CVE-2025-20743",
        "datePublished": "2025-11-04T06:19:57.990Z",
        "dateReserved": "2024-11-01T01:21:50.396Z",
        "dateUpdated": "2025-11-04T21:07:53.035Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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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