CVE-2026-15173: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
pcapng file parser crash in Wireshark 4.6.0 to 4.6.6 allows denial of service
AI Analysis
Technical Summary
CVE-2026-15173 is a heap-based buffer overflow vulnerability in the pcapng file parser component of Wireshark versions 4.6.0 to 4.6.6. The flaw allows crafted pcapng files to cause the application to crash, leading to denial of service. The vulnerability does not impact confidentiality or integrity but affects availability. No known exploits are reported in the wild, and no vendor advisory or patch is currently available.
Potential Impact
Successful exploitation causes a denial of service by crashing Wireshark when processing malicious pcapng files. There is no impact on confidentiality or integrity according to the CVSS vector. The attack complexity is high, requiring local access and user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid opening untrusted pcapng files in affected Wireshark versions.
CVE-2026-15173: CWE-122: Heap-based Buffer Overflow in Wireshark Foundation Wireshark
Description
pcapng file parser crash in Wireshark 4.6.0 to 4.6.6 allows denial of service
CVSS v3.1
Score 4.7medium
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-2026-15173 is a heap-based buffer overflow vulnerability in the pcapng file parser component of Wireshark versions 4.6.0 to 4.6.6. The flaw allows crafted pcapng files to cause the application to crash, leading to denial of service. The vulnerability does not impact confidentiality or integrity but affects availability. No known exploits are reported in the wild, and no vendor advisory or patch is currently available.
Potential Impact
Successful exploitation causes a denial of service by crashing Wireshark when processing malicious pcapng files. There is no impact on confidentiality or integrity according to the CVSS vector. The attack complexity is high, requiring local access and user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid opening untrusted pcapng files in affected Wireshark versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-07-08T20:46:03.869Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4ebdf4c9d9e3dbe3bf8a1b
Added to database: 07/08/2026, 21:15:32 UTC
Last enriched: 07/16/2026, 10:09:47 UTC
Last updated: 08/22/2026, 22:52:11 UTC
Views: 92
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.