High severity · published Sep 29, 2026
CVE-2026-95387
Heap-based Buffer Overflow in Wireshark
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
SPDY protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Wireshark · Wireshark Foundation
4.6.0 before 4.6.9; 4.4.0 before 4.4.19 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-95387
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-95387
www.wireshark.org
https://www.wireshark.org/security/wnpa-sec-2026-97.html
gitlab.com
https://gitlab.com/wireshark/wireshark/-/work_items/21487
More from Wireshark
9.8
CVE-2026-76886
Heap-based Buffer Overflow in Wireshark
8.8
CVE-2026-5402
Heap-based Buffer Overflow in Wireshark
8.1
CVE-2026-95389
Heap-based Buffer Overflow in Wireshark
7.8
CVE-2026-96419
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Wireshark
7.8
CVE-2026-5403
Heap-based Buffer Overflow in Wireshark