CVE-2026-76889: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
UMTS FP 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-2026-76889 is a heap-based buffer overflow vulnerability in the UMTS FP protocol dissector component of Wireshark Foundation's Wireshark software. 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 vulnerability can be triggered by crafted packets causing the dissector to crash, leading to denial of service. The CVSS v3.1 base score is 4.7, indicating medium severity, with attack vector local, high attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Exploitation of this vulnerability results in denial of service due to application crash. There is no impact on confidentiality or integrity. The attack requires local access and user interaction, and has high complexity, limiting the ease of exploitation.
Mitigation Recommendations
No explicit patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor Wireshark Foundation advisories for updates addressing this vulnerability.
CVE-2026-76889: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Description
UMTS FP 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 4.7medium
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-2026-76889 is a heap-based buffer overflow vulnerability in the UMTS FP protocol dissector component of Wireshark Foundation's Wireshark software. 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 vulnerability can be triggered by crafted packets causing the dissector to crash, leading to denial of service. The CVSS v3.1 base score is 4.7, indicating medium severity, with attack vector local, high attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Exploitation of this vulnerability results in denial of service due to application crash. There is no impact on confidentiality or integrity. The attack requires local access and user interaction, and has high complexity, limiting the ease of exploitation.
Mitigation Recommendations
No explicit patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor Wireshark Foundation advisories for updates addressing this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:34:49.932Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8633c8acd9273b49b8ad6b
Added to database: 08/19/2026, 22:52:56 UTC
Last enriched: 09/18/2026, 23:34:39 UTC
Last updated: 10/02/2026, 14:46:10 UTC
Views: 62
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