CVE-2026-6530: Heap-based Buffer Overflow in Wireshark
Published Apr 30, 2026
·Updated
DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Affected Software
3 affected components
Wireshark Wireshark>=4.6.0<=4.6.4, >=4.4.0<=4.4.14
Wireshark Wireshark>=4.4.0<=4.4.14
Wireshark Wireshark>=4.6.0<=4.6.4
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Wiresharkto a version that resolves this vulnerability.Fixed in 4.6.5
Event History
Apr 30, 2026
CVE Published
via MITRE·05:36 AM
Data Sourced
via MITRE·05:36 AM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·07:16 AM
DescriptionSeverityWeaknessAffected Software
Dec 24, 58314
Event
via FIRST·02:15 AM
Frequently Asked Questions
1
What is the severity of CVE-2026-6530?
CVE-2026-6530 has a high severity rating due to its potential to cause denial of service by crashing the application.
2
How do I fix CVE-2026-6530?
Fix CVE-2026-6530 by updating Wireshark to version 4.6.5 or later.
3
What versions of Wireshark are affected by CVE-2026-6530?
CVE-2026-6530 affects Wireshark versions 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14.
4
What kind of vulnerability is CVE-2026-6530?
CVE-2026-6530 is a heap-based buffer overflow vulnerability.
5
Can CVE-2026-6530 be exploited remotely?
Yes, CVE-2026-6530 can potentially be exploited remotely, leading to application crashes.