CVE-2026-6535 Details
Description
Dissection engine zlib decompression crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
A denial-of-service vulnerability has been identified in Wireshark versions 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14. The issue arises in the dissection engine, where improper handling of zlib decompression can lead to a crash.
Users can upgrade to Wireshark versions 4.6.5 or 4.4.15 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 30, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gitlab.com/wireshark/wireshark/-/issues/21097 | [email protected] | ExploitIssue Tracking |
| https://gitlab.com/wireshark/wireshark/-/issues/21098 | [email protected] | Broken Link |
| https://www.wireshark.org/security/wnpa-sec-2026-26.html | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-1325 | Improperly Controlled Sequential Memory Allocation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wireshark wireshark | >= 4.4.0, <= 4.4.14 >= 4.6.0, <= 4.6.4 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | Initial Analysis | [email protected] |
| Apr 30, 2026 | New CVE Received | [email protected] |