CVE-2026-76888: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
AI Analysis
Technical Summary
CVE-2026-76888 is a heap-based buffer overflow vulnerability in the Remote Desktop Protocol (RDP) dissector component of Wireshark. It affects versions from 4.4.0 up to but not including 4.4.18, and from 4.6.0 up to but not including 4.6.8. The flaw can be triggered to cause a crash of the Wireshark application, leading to denial of service. The CVSS v3.1 base score is 3.1, indicating low severity, with network attack vector, high attack complexity, no privileges required, and user interaction required. There is no indication of confidentiality or integrity impact.
Potential Impact
The vulnerability allows an attacker to cause a denial of service by crashing Wireshark when processing malicious RDP protocol data. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
No explicit patch information is provided in the input data. Patch status is not yet confirmed — check the Wireshark Foundation vendor advisory for current remediation guidance. Until a fix is applied, avoid processing untrusted RDP traffic with affected Wireshark versions to mitigate risk.
CVE-2026-76888: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Description
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
CVSS v3.1
Score 3.1low
Affected software
Wireshark Foundation
Wireshark
pkg:github/wireshark/wiresharkRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76888 is a heap-based buffer overflow vulnerability in the Remote Desktop Protocol (RDP) dissector component of Wireshark. It affects versions from 4.4.0 up to but not including 4.4.18, and from 4.6.0 up to but not including 4.6.8. The flaw can be triggered to cause a crash of the Wireshark application, leading to denial of service. The CVSS v3.1 base score is 3.1, indicating low severity, with network attack vector, high attack complexity, no privileges required, and user interaction required. There is no indication of confidentiality or integrity impact.
Potential Impact
The vulnerability allows an attacker to cause a denial of service by crashing Wireshark when processing malicious RDP protocol data. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
No explicit patch information is provided in the input data. Patch status is not yet confirmed — check the Wireshark Foundation vendor advisory for current remediation guidance. Until a fix is applied, avoid processing untrusted RDP traffic with affected Wireshark versions to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:34:44.935Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8633c8acd9273b49b8ad69
Added to database: 08/19/2026, 22:52:56 UTC
Last enriched: 09/18/2026, 23:34:35 UTC
Last updated: 10/02/2026, 14:46:10 UTC
Views: 60
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