CVE-2026-20419 (GCVE-0-2026-20419)

Vulnerability from cvelistv5 – Published: 2026-02-02 08:16 – Updated: 2026-02-05 16:11
VLAI?
Summary
In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 / WCNCR00463309; Issue ID: MSV-4852.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version
MediaTek, Inc. MT6890, MT6989TB, MT7902, MT7915, MT7916, MT7920, MT7921, MT7922, MT7925, MT7927, MT7981, MT7986, MT8196, MT8668, MT8676, MT8678, MT8775, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893, MT8910 Affected: CE/NB SDK release 3.6 and before / SDK release 7.6.7.2 and before / OpenWrt 19.07, 21.02 (MT6890)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-20419",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-05T16:11:25.115269Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-05T16:11:40.807Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "MT6890, MT6989TB, MT7902, MT7915, MT7916, MT7920, MT7921, MT7922, MT7925, MT7927, MT7981, MT7986, MT8196, MT8668, MT8676, MT8678, MT8775, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893, MT8910",
          "vendor": "MediaTek, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "CE/NB SDK release 3.6 and before / SDK release 7.6.7.2 and before / OpenWrt 19.07, 21.02 (MT6890)"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 /  WCNCR00463309; Issue ID: MSV-4852."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-754",
              "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-02T08:16:46.837Z",
        "orgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
        "shortName": "MediaTek"
      },
      "references": [
        {
          "url": "https://corp.mediatek.com/product-security-bulletin/February-2026"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ee979b05-11f8-4f25-a7e0-a1fa9c190374",
    "assignerShortName": "MediaTek",
    "cveId": "CVE-2026-20419",
    "datePublished": "2026-02-02T08:16:46.837Z",
    "dateReserved": "2025-11-03T01:30:59.009Z",
    "dateUpdated": "2026-02-05T16:11:40.807Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20419\",\"sourceIdentifier\":\"security@mediatek.com\",\"published\":\"2026-02-02T09:15:56.990\",\"lastModified\":\"2026-02-05T17:16:13.460\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 /  WCNCR00463309; Issue ID: MSV-4852.\"},{\"lang\":\"es\",\"value\":\"En el firmware de AP/STA de WLAN, existe una posible falta de respuesta del sistema debido a una excepci\u00f3n no capturada. Esto podr\u00eda llevar a una denegaci\u00f3n de servicio remota (proximal/adyacente) sin necesidad de privilegios de ejecuci\u00f3n adicionales. No se necesita interacci\u00f3n del usuario para la explotaci\u00f3n. ID de parche: WCNCR00461663 / WCNCR00463309; ID de problema: MSV-4852.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security@mediatek.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-754\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mediatek:nbiot_sdk:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"3.6\",\"matchCriteriaId\":\"4926CFD0-C88C-4A5A-8396-A719C52818B1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:mediatek:software_development_kit:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"7.6.7.2\",\"matchCriteriaId\":\"0DD86CC1-BD46-42D2-9112-190CCAC96B30\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"171D1C08-F055-44C0-913C-AA2B73AF5B72\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt6989tb:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8824BD65-5AB4-4D5F-94C3-3CEA09D0A497\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7902:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"91DEA745-47A8-43F1-A1B2-F53F651A99EF\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7915:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3AB22996-9C22-4B6C-9E94-E4C055D16335\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7916:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DD5AA441-5381-4179-89EB-1642120F72B4\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7920:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"140DAC08-96E9-47D3-BC2E-65E999DCFD50\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7921:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"32AFEA0A-FFE2-4EA9-8B51-7E3E75DE65CC\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7922:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EA2A6813-7138-441E-A9E4-FF62FCBD797A\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7925:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"27CFC9DF-2F4C-469A-8A19-A260B1134CFE\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7927:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"05525018-AFE0-415C-A71C-A77922C7D637\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7981:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"490CD97B-021F-4350-AEE7-A2FA866D5889\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt7986:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"40A9E917-4B34-403F-B512-09EEBEA46811\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8196:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FB0C4D80-28BC-4C4D-B522-AD9EC5222A2E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2589C222-3D62-4BDB-98F2-5F1E38600D8D\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EE302F6F-170E-4350-A8F4-65BE0C50CB78\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"152A5F3D-8004-4649-BDB1-E6F0798AF1CB\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8775:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE5FB550-7264-4879-BAF9-6798949113AF\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8791t:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1BB05B1D-77C9-4E42-91AD-9F087413DC20\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"336FC69E-E89F-4642-B6B9-8009D9A2BD52\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2FBD3487-F8CE-406C-8BD7-DD57FF8CD60B\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8796:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE933AD9-3A6F-421B-8AB3-C45F8DEA9548\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8873:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D6DD525F-7050-42BD-829D-1121698B8009\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"23DD8281-FEB4-4E23-8DDA-680FF895F12E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8893:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CCFAADB1-C2B2-47A6-BB66-761B964E7DFB\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8C81BC81-1358-4005-8D35-92428D052A65\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openwrt:openwrt:19.07.0:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"4FA469E2-9E63-4C9A-8EBA-10C8C870063A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"F0133207-2EED-4625-854F-8DB7770D5BF7\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"171D1C08-F055-44C0-913C-AA2B73AF5B72\"}]}]}],\"references\":[{\"url\":\"https://corp.mediatek.com/product-security-bulletin/February-2026\",\"source\":\"security@mediatek.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20419\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-05T16:11:25.115269Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-02T13:45:02.991Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"MediaTek, Inc.\", \"product\": \"MT6890, MT6989TB, MT7902, MT7915, MT7916, MT7920, MT7921, MT7922, MT7925, MT7927, MT7981, MT7986, MT8196, MT8668, MT8676, MT8678, MT8775, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893, MT8910\", \"versions\": [{\"status\": \"affected\", \"version\": \"CE/NB SDK release 3.6 and before / SDK release 7.6.7.2 and before / OpenWrt 19.07, 21.02 (MT6890)\"}]}], \"references\": [{\"url\": \"https://corp.mediatek.com/product-security-bulletin/February-2026\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 /  WCNCR00463309; Issue ID: MSV-4852.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-754\", \"description\": \"CWE-754 Improper Check for Unusual or Exceptional Conditions\"}]}], \"providerMetadata\": {\"orgId\": \"ee979b05-11f8-4f25-a7e0-a1fa9c190374\", \"shortName\": \"MediaTek\", \"dateUpdated\": \"2026-02-02T08:16:46.837Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-20419\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-05T16:11:40.807Z\", \"dateReserved\": \"2025-11-03T01:30:59.009Z\", \"assignerOrgId\": \"ee979b05-11f8-4f25-a7e0-a1fa9c190374\", \"datePublished\": \"2026-02-02T08:16:46.837Z\", \"assignerShortName\": \"MediaTek\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.