CVE-2026-15170: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Z39.50 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
AI Analysis
Technical Summary
CVE-2026-15170 is a heap-based buffer overflow vulnerability in the Z39.50 protocol dissector component of Wireshark. It affects Wireshark versions 4.6.0 through 4.6.6 and 4.4.0 through 4.4.16. Exploitation of this vulnerability can cause the application to crash, leading to denial of service. The vulnerability does not impact confidentiality or integrity but affects availability. There is no vendor advisory or patch information currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation results in denial of service by crashing the Wireshark application. There is no indication of confidentiality or integrity compromise. The impact is limited to availability disruption.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid processing untrusted Z39.50 protocol data with affected Wireshark versions or use alternative analysis tools.
CVE-2026-15170: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Description
Z39.50 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
CVSS v3.1
Score 5.5medium
Affected software
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-2026-15170 is a heap-based buffer overflow vulnerability in the Z39.50 protocol dissector component of Wireshark. It affects Wireshark versions 4.6.0 through 4.6.6 and 4.4.0 through 4.4.16. Exploitation of this vulnerability can cause the application to crash, leading to denial of service. The vulnerability does not impact confidentiality or integrity but affects availability. There is no vendor advisory or patch information currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation results in denial of service by crashing the Wireshark application. There is no indication of confidentiality or integrity compromise. The impact is limited to availability disruption.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid processing untrusted Z39.50 protocol data with affected Wireshark versions or use alternative analysis tools.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-07-08T20:45:48.875Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4ebdf4c9d9e3dbe3bf8a0f
Added to database: 07/08/2026, 21:15:32 UTC
Last enriched: 07/16/2026, 10:09:19 UTC
Last updated: 08/22/2026, 10:52:07 UTC
Views: 71
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