CVE-2025-9817 — NULL Pointer Dereference in Foundation Wireshark

CWE-476 — NULL Pointer Dereference6 documents6 sources
Severity
7.5HIGHNVD
CNA7.8
EPSS
0.0%
top 90.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Wireshark Foundation WiresharkWireshark
Timeline
PublishedSep 3
Latest updateOct 9

Description

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶CVEListV5wireshark_foundation/wireshark4.4.0 — 4.4.9
▶Debianwireshark/wireshark< 4.4.13-0+deb13u1+1
▶NVDwireshark/wireshark4.4.0 — 4.4.8+1

🔴Vulnerability Details

3
GHSA
GHSA-3mqq-9w3m-xpj8: SSH dissector crash in Wireshark 4↗2025-10-09
▶
CVEList
NULL Pointer Dereference in Wireshark↗2025-09-03
▶
OSV
CVE-2025-9817: SSH dissector crash in Wireshark 4↗2025-09-03
▶

📋Vendor Advisories

2
Red Hat
Wireshark: NULL Pointer Dereference in Wireshark↗2025-09-03
▶
Debian
CVE-2025-9817: wireshark - SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service↗2025
▶
CVE-2025-9817 — NULL Pointer Dereference | cvebase