GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-6530 (GCVE-0-2026-6530)

Vulnerability from cvelistv5 – Published: 2026-04-30 05:36 – Updated: 2026-04-30 13:14
VLAI
Title
Heap-based Buffer Overflow in Wireshark
Summary
DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-30 13:10 UTC
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version CPE status
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.5 (semver)
Affected: 4.4.0 , < 4.4.15 (semver)
guessed Create a notification for this product.
Credits
Alexandre de Oliveira
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-6530",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-30T13:10:13.038596Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-30T13:14:06.742Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21144"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Wireshark",
          "vendor": "Wireshark Foundation",
          "versions": [
            {
              "lessThan": "4.6.5",
              "status": "affected",
              "version": "4.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "4.4.15",
              "status": "affected",
              "version": "4.4.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Alexandre de Oliveira"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-30T05:36:24.210Z",
        "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "shortName": "GitLab"
      },
      "references": [
        {
          "url": "https://www.wireshark.org/security/wnpa-sec-2026-31.html"
        },
        {
          "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21144"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to version 4.6.5 or above"
        }
      ],
      "title": "Heap-based Buffer Overflow in Wireshark"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
    "assignerShortName": "GitLab",
    "cveId": "CVE-2026-6530",
    "datePublished": "2026-04-30T05:36:24.210Z",
    "dateReserved": "2026-04-17T15:06:05.058Z",
    "dateUpdated": "2026-04-30T13:14:06.742Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-6530",
      "date": "2026-09-17",
      "epss": "0.0016",
      "percentile": "0.0561"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Wireshark",
                "vendor": "Wireshark Foundation",
                "versions": [
                  {
                    "lessThan": "4.6.5",
                    "status": "affected",
                    "version": "4.6.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "4.4.15",
                    "status": "affected",
                    "version": "4.4.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "cve@gitlab.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "77CF79F1-B53C-40A7-9570-A192D5A85ED6",
                    "versionEndIncluding": "4.4.14",
                    "versionStartIncluding": "4.4.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B52139AE-161F-406A-B28D-F874CE8B68B6",
                    "versionEndIncluding": "4.6.4",
                    "versionStartIncluding": "4.6.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service"
          }
        ],
        "id": "CVE-2026-6530",
        "lastModified": "2026-06-17T11:00:56.397",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "cve@gitlab.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-6530",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-30T13:10:13.038596Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-04-30T07:16:40.250",
        "references": [
          {
            "source": "cve@gitlab.com",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21144"
          },
          {
            "source": "cve@gitlab.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.wireshark.org/security/wnpa-sec-2026-31.html"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21144"
          }
        ],
        "sourceIdentifier": "cve@gitlab.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-122"
              }
            ],
            "source": "cve@gitlab.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-02T12:46:22+00:00",
      "cve": "CVE-2026-6530",
      "id": "CVE-2026-6530",
      "initial_release_date": "2026-04-30T05:36:24.210000+00:00",
      "product_status:known_affected": "20",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "wireshark: Wireshark: Denial of Service via DCP-ETSI protocol dissector crash",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6530.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-6530",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-04-30T13:10:13.038596Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-04-30T13:10:05.676Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21144"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Wireshark",
              "vendor": "Wireshark Foundation",
              "versions": [
                {
                  "lessThan": "4.6.5",
                  "status": "affected",
                  "version": "4.6.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "4.4.15",
                  "status": "affected",
                  "version": "4.4.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "Alexandre de Oliveira"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service"
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-122",
                  "description": "CWE-122: Heap-based Buffer Overflow",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-04-30T05:36:24.210Z",
            "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
            "shortName": "GitLab"
          },
          "references": [
            {
              "url": "https://www.wireshark.org/security/wnpa-sec-2026-31.html"
            },
            {
              "url": "https://gitlab.com/wireshark/wireshark/-/work_items/21144"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "value": "Upgrade to version 4.6.5 or above"
            }
          ],
          "title": "Heap-based Buffer Overflow in Wireshark"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "assignerShortName": "GitLab",
        "cveId": "CVE-2026-6530",
        "datePublished": "2026-04-30T05:36:24.210Z",
        "dateReserved": "2026-04-17T15:06:05.058Z",
        "dateUpdated": "2026-04-30T13:14:06.742Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.