Denial of Service Vulnerability in Wireshark by the Vendor Wireshark
CVE-2026-76880

7.5HIGH

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
19 August 2026

What is CVE-2026-76880?

The Wireshark application has a vulnerability that may cause a crash in its RRC protocol dissector, potentially leading to denial of service. This issue affects multiple versions of the software, which could be exploited to disrupt normal operations, rendering the application unavailable to legitimate users. Users are strongly advised to apply the latest patches or updates to mitigate this vulnerability and ensure continued safe usage of their network analysis tools.

Affected Version(s)

Wireshark 4.6.0 < 4.6.8

Wireshark 4.4.0 < 4.4.18

References

https://www.wireshark.org/security/wnpa-sec-2026-88.html
https://gitlab.com/wireshark/wireshark/-/work_items/21478

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Aisle Research (Dmitrijs Trizna, Luigino Camastra, Ze Sheng (O2Lab & TAMU), Igor Morgenstern)
.