The SPDY protocol dissector could crash. Discovered by Security research assessment of Wireshark internals (Feng Xue). We are unaware of any exploits for this issue. It may be possible to make Wireshark crash by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.

The version of Wireshark installed on the remote macOS / Mac OS X host is prior to 4.6.9. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.6.9 advisory.

  - C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service     (CVE-2026-76879, CVE-2026-76886)

  - HTTP3 dissector crash in Wireshark 4.6.0 and 4.6.1 allows denial of service (CVE-2025-13945)

  - MEGACO dissector infinite loop in Wireshark 4.6.0 to 4.6.1 and 4.4.0 to 4.4.11 allows denial of service     (CVE-2025-13946)

  - IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of     service (CVE-2026-0959)

  - HTTP3 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.2 allows denial of service     (CVE-2026-0960)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Wireshark installed on the remote macOS / Mac OS X host is prior to 4.4.19. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.4.19 advisory.

  - C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service     (CVE-2026-76879, CVE-2026-76886)

  - FiveCo RAP dissector infinite loop in Wireshark 4.4.0 to 4.4.1 and 4.2.0 to 4.2.8 allows denial of service     via packet injection or crafted capture file (CVE-2024-11595)

  - ECMP dissector crash in Wireshark 4.4.0 to 4.4.1 and 4.2.0 to 4.2.8 allows denial of service via packet     injection or crafted capture file (CVE-2024-11596)

  - ITS dissector crash in Wireshark 4.4.0 allows denial of service via packet injection or crafted capture     file (CVE-2024-9780)

  - AppleTalk and RELOAD Framing dissector crash in Wireshark 4.4.0 and 4.2.0 to 4.2.7 allows denial of     service via packet injection or crafted capture file (CVE-2024-9781)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Wireshark installed on the remote Windows host is prior to 4.4.19. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.4.19 advisory.

  - C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service     (CVE-2026-76879, CVE-2026-76886)

  - FiveCo RAP dissector infinite loop in Wireshark 4.4.0 to 4.4.1 and 4.2.0 to 4.2.8 allows denial of service     via packet injection or crafted capture file (CVE-2024-11595)

  - ECMP dissector crash in Wireshark 4.4.0 to 4.4.1 and 4.2.0 to 4.2.8 allows denial of service via packet     injection or crafted capture file (CVE-2024-11596)

  - ITS dissector crash in Wireshark 4.4.0 allows denial of service via packet injection or crafted capture     file (CVE-2024-9780)

  - AppleTalk and RELOAD Framing dissector crash in Wireshark 4.4.0 and 4.2.0 to 4.2.7 allows denial of     service via packet injection or crafted capture file (CVE-2024-9781)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Wireshark installed on the remote Windows host is prior to 4.6.9. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.6.9 advisory.

  - C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service     (CVE-2026-76879, CVE-2026-76886)

  - HTTP3 dissector crash in Wireshark 4.6.0 and 4.6.1 allows denial of service (CVE-2025-13945)

  - MEGACO dissector infinite loop in Wireshark 4.6.0 to 4.6.1 and 4.4.0 to 4.4.11 allows denial of service     (CVE-2025-13946)

  - IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of     service (CVE-2026-0959)

  - HTTP3 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.2 allows denial of service     (CVE-2026-0960)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
349570	Wireshark 4.6.x < 4.6.9 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	Local	critical
349569	Wireshark 4.4.x < 4.4.19 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	Local	critical
349568	Wireshark 4.4.x < 4.4.19 Multiple Vulnerabilities	Nessus	Windows	Local	critical
349567	Wireshark 4.6.x < 4.6.9 Multiple Vulnerabilities	Nessus	Windows	Local	critical

Detections

Analytics

CVE-2026-95387

high

Tenable Plugins

critical

critical

critical

critical