TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0340 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-5656:
    Profile import path traversal in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and     possible code execution

    CVE-2026-5405:
    RDP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and     possible code execution

    CVE-2026-5403:
    SBC codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code     execution

    CVE-2026-5402:
    TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible     code execution

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible     code execution (CVE-2026-5402)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Wireshark installed on the remote macOS / Mac OS X host is prior to 4.6.5. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.6.5 advisory.

  - RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of     service (CVE-2026-3203)

  - GSM RP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-6870)

  - Monero protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-5409)

  - BT-DHT protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-5408)

  - FC-SWILS protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-5406)

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 4.6.5. It is, therefore, affected by multiple vulnerabilities as referenced in the wireshark-4.6.5 advisory.

  - RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of     service (CVE-2026-3203)

  - GSM RP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-6870)

  - Monero protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-5409)

  - BT-DHT protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-5408)

  - FC-SWILS protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service     (CVE-2026-5406)

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	Severity
319758	TencentOS Server 4: wireshark (TSSA-2026:0340)	Nessus	Tencent Local Security Checks	high
311564	Linux Distros Unpatched Vulnerability : CVE-2026-5402	Nessus	Misc.	high
311427	Wireshark 4.6.x < 4.6.5 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	high
311426	Wireshark 4.6.x < 4.6.5 Multiple Vulnerabilities	Nessus	Windows	high

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CVE-2026-5402

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