CVE-2026-76883: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Catapult DCT2000 file parser 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-2026-76883 is a heap-based buffer overflow vulnerability in the Catapult DCT2000 file parser component of Wireshark. It affects Wireshark 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 processing crafted Catapult DCT2000 files, leading to a crash and denial of service. The CVSS v3.1 base score is 4.7, indicating a medium severity with attack vector local, high attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation causes a denial of service by crashing the Wireshark application when parsing malicious Catapult DCT2000 files. There is no confidentiality or integrity impact reported. The attack requires local access and user interaction, and is considered medium severity.
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the Wireshark Foundation vendor advisory for current remediation guidance. Until a fix is applied, avoid opening untrusted Catapult DCT2000 files in affected Wireshark versions.
CVE-2026-76883: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Description
Catapult DCT2000 file parser 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-2026-76883 is a heap-based buffer overflow vulnerability in the Catapult DCT2000 file parser component of Wireshark. It affects Wireshark 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 processing crafted Catapult DCT2000 files, leading to a crash and denial of service. The CVSS v3.1 base score is 4.7, indicating a medium severity with attack vector local, high attack complexity, no privileges required, user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation causes a denial of service by crashing the Wireshark application when parsing malicious Catapult DCT2000 files. There is no confidentiality or integrity impact reported. The attack requires local access and user interaction, and is considered medium severity.
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the Wireshark Foundation vendor advisory for current remediation guidance. Until a fix is applied, avoid opening untrusted Catapult DCT2000 files in affected Wireshark versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:34:19.943Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8633c7acd9273b49b8ad46
Added to database: 08/19/2026, 22:52:55 UTC
Last enriched: 09/18/2026, 23:34:14 UTC
Last updated: 10/03/2026, 14:46:10 UTC
Views: 54
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