CVE-2026-15173: Heap-based Buffer Overflow in Wireshark
Published Jul 8, 2026
·Updated
pcapng file parser crash in Wireshark 4.6.0 to 4.6.6 allows denial of service
Affected Software
2 affected components
Wireshark Wireshark>=4.6.0<=4.6.6
Wireshark Wireshark>=4.6.0<4.6.7
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Wiresharkto a version that resolves this vulnerability.Fixed in 4.6.7
Event History
Jul 8, 2026
CVE Published
via MITRE·08:51 PM
Data Sourced
via MITRE·08:51 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·09:16 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-15173?
CVE-2026-15173 has a medium severity rating of 4.7.
2
How does CVE-2026-15173 affect Wireshark?
CVE-2026-15173 allows a heap-based buffer overflow that can cause a denial of service in Wireshark.
3
Which versions of Wireshark are impacted by CVE-2026-15173?
Wireshark versions 4.6.0 to 4.6.6 are affected by CVE-2026-15173.
4
How can I mitigate the risks associated with CVE-2026-15173?
To mitigate CVE-2026-15173, users should update Wireshark to the latest version beyond 4.6.6.
5
What types of attacks could exploit CVE-2026-15173?
CVE-2026-15173 could potentially be exploited for denial of service attacks through specially crafted pcapng files.