CVE-2026-76888

A flaw was found in Wireshark. A remote attacker could exploit a heap-based buffer overflow vulnerability within the RDP (Remote Desktop Protocol) dissector. By crafting a malicious RDP packet, an attacker could cause the Wireshark application to crash, leading to a denial of service.

A flaw was found in the RDP dissector 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.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Do not open untrusted packet capture files or capture traffic from untrusted networks with Wireshark.