CVE-2026-6533

Dissection engine LZ77 decompression crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gitlab.com/wireshark/wireshark/-/issues/21127	Exploit Issue Tracking Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2026-28.html	Vendor Advisory
https://gitlab.com/wireshark/wireshark/-/work_items/21127	Exploit Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:wireshark:wireshark::::::::
	cpe:2.3:a:wireshark:wireshark::::::::

History

26 Oct 2026, 00:10

Type	Values Removed	Values Added
Summary		(es) Fallo de descompresión LZ77 del motor de disección en Wireshark 4.6.0 a 4.6.4 y 4.4.0 a 4.4.14 permite denegación de servicio

Information

Published : 2026-04-30 07:16

Updated : 2026-10-26 00:10

NVD link : CVE-2026-6533

Mitre link : CVE-2026-6533

CVE.ORG link : CVE-2026-6533

JSON object : View

Products Affected

wireshark

wireshark

CWE

CWE-1325

Improperly Controlled Sequential Memory Allocation

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