Wireshark LoRaWAN Decryption Numeric Truncation Error Remote Code Execution Vulnerability

November 10th, 2026
ZDI-26-898 ZDI-CAN-32851

CVE ID

CVSS Score

7.1 AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

Wireshark

Affected Products

Wireshark

Vulnerability Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Wireshark. Authentication is not required to exploit this vulnerability. However, only instances with LoRaWAN decryption enabled are vulnerable.

The specific flaw exists within the implementation of LoRaWAN payload decryption. The issue results from the lack of proper validation of user-supplied data, which can result in an incorrect calculation before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

version 4.6 fix: https://gitlab.com/wireshark/wireshark/-/commit/8f7bb2905d3a9acb8ca6ae113806adcbb30fc6b6;
version 4.4 fix: https://gitlab.com/wireshark/wireshark/-/commit/6527cb12b74655eb308d3c84bb9df9f57e396c67


Disclosure Timeline

  • 2026-08-20 - Vulnerability reported to vendor
  • 2026-11-10 - Coordinated public release of advisory
  • 2026-11-10 - Advisory Updated

Credit

HeeChan Kim (@heegong123) of TeamH4C

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