CVE-2026-15174: Heap-based Buffer Overflow in Wireshark
Published Jul 8, 2026
·Updated
Catapult DCT2000 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
Affected Software
3 affected components
Wireshark Wireshark>=4.6.0<=4.6.6, >=4.4.0<=4.4.16
Wireshark Wireshark>=4.4.0<4.4.17
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-2026-15174?
CVE-2026-15174 has a medium severity rating of 5.5.
2
How does CVE-2026-15174 affect Wireshark?
CVE-2026-15174 leads to a heap-based buffer overflow that causes the Catapult DCT2000 protocol dissector to crash, resulting in a denial of service.
3
Which versions of Wireshark are impacted by CVE-2026-15174?
CVE-2026-15174 affects Wireshark versions 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16.
4
How can I mitigate the risks associated with CVE-2026-15174?
To mitigate CVE-2026-15174, upgrade to the latest version of Wireshark that addresses the vulnerability.
5
Is there a workaround for CVE-2026-15174 if I cannot update Wireshark?
There is no specific workaround for CVE-2026-15174; therefore, updating to the patched version is strongly recommended.