PT-2025-35699 · Wireshark Foundation+3 · Wireshark+3

Published 2025-09-03 · Updated 2026-04-02 · CVE-2025-9817

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Wireshark versions 4.4.0 through 4.4.8

Description The SSH dissector in Wireshark is susceptible to a crash, potentially leading to a denial of service.

Recommendations Upgrade Wireshark to a newer version to address this issue.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2026:1714

ALT-PU-2025-11739

AZL-66770

CVE-2025-9817

OESA-2025-2263

OESA-2025-2264

OESA-2025-2265

OESA-2025-2266

OESA-2025-2267

OPENSUSE-SU-2025:15522-1

OPENSUSE-SU-2026:20151-1

RHSA-2026:1714

RHSA-2026:2763

SUSE-SU-2025:03294-1

SUSE-SU-2025_03294-1

SUSE-SU-2026:1169-1

SUSE-SU-2026:20222-1

Affected Products

Alt Linux

Debian

Suse

Wireshark

References · 81

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9817.json · Exploit
• https://osv.dev/vulnerability/OESA-2025-2266 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-9817 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-9817 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-9817 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:1714 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20222-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-2267 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-66770 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20151-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:1169-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2025-2264 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-9817 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-9817 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15522-1 · Vendor Advisory