CVE-2026-76887

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{"bugzilla": {"description": "wireshark: Wireshark: Denial of service via heap-based buffer overflow in dissection engine", "id": "2520081", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520081"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-120", "details": ["Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service", "A flaw was found in Wireshark. This heap-based buffer overflow vulnerability in the dissection engine could allow a remote attacker to cause a denial of service. Exploitation requires a user to process a specially crafted network packet, leading to a crash of the application."], "mitigation": {"lang": "en:us", "value": "Do not open untrusted packet capture files or capture traffic from untrusted networks with Wireshark."}, "name": "CVE-2026-76887", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "wireshark", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-19T22:35:29Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-76887\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-76887\nhttps://gitlab.com/wireshark/wireshark/-/work_items/21423\nhttps://www.wireshark.org/security/wnpa-sec-2026-69.html"], "statement": "A flaw was found in the dissection engine in Wireshark versions 4.4.0 through 4.4.17 and 4.6.0 through 4.6.7. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat Enterprise Linux 10 and Red Hat In-Vehicle OS ship an affected version of Wireshark.", "threat_severity": "Low"}

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