PT-2026-36070 · Wireshark · Wireshark

Sharon Brizinov · Published 2026-03-30 · Updated 2026-06-01 · CVE-2026-6533

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Wireshark versions 4.6.0 through 4.6.4 Wireshark versions 4.4.0 through 4.4.14

Description A crash in the dissection engine during LZ77 decompression can lead to a denial of service. LZ77 is a lossless data compression algorithm that replaces repeated occurrences of data with references to a single copy.

Recommendations Update Wireshark versions 4.6.0 through 4.6.4 to a version newer than 4.6.4. Update Wireshark versions 4.4.0 through 4.4.14 to a version newer than 4.4.14.

Exploit

Fix

DoS

Weakness Enumeration

CWE-1325

Related Identifiers

BDU:2026-06968

CVE-2026-6533

OESA-2026-2225

OESA-2026-2226

OESA-2026-2227

OESA-2026-2228

OPENSUSE-SU-2026:10686-1

Affected Products

Wireshark

References · 104

• 🔥 https://gitlab.com/wireshark/wireshark/-/work_items/21127 · Exploit
• 🔥 https://gitlab.com/wireshark/wireshark/-/issues/21127 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-5407 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6869 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6538 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-7375 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6533 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-5653 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6524 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6523 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6519 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-5404 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-7378 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-6533 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2226 · Vendor Advisory