CVE-2025-9817

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
GitLabCNA
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 4%
VendorProductVersion
wiresharkwireshark
4.4.0 ≤
𝑥
< 4.4.9
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
wireshark
bullseye
unimportant
bullseye (security)
unimportant
bookworm
unimportant
bookworm (security)
unimportant
trixie
unimportant
forky
4.6.1-2
fixed
sid
4.6.1-2
fixed
Common Weakness Enumeration
References
https://gitlab.com/wireshark/wireshark/-/issues/20642
https://www.wireshark.org/security/wnpa-sec-2025-03.html