CVE-2026-76918
published 2026-08-19CVE-2026-76918: SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
PriorityP418medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
0.14%
2.9th percentile
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| gitlab | wireshark | — | — |
| wireshark | wireshark | — | — |
| wireshark | wireshark | >= 4.4.0 < 4.4.18 | 4.4.18 |
| wireshark | wireshark | >= 4.6.0 < 4.6.8 | 4.6.8 |
| wireshark_foundation | wireshark | >= 4.4.0 < 4.4.18 | 4.4.18 |
| wireshark_foundation | wireshark | >= 4.6.0 < 4.6.8 | 4.6.8 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vendor_redhat5.5MEDIUM
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GitLab
Heap-based Buffer Overflow in Wireshark
vendor_gitlab·2026-08-19·CVSS 5.5
CVE-2026-76918 [MEDIUM] CWE-122 Heap-based Buffer Overflow in Wireshark
Heap-based Buffer Overflow in Wireshark
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Affected products: Wireshark
Affected versions: >=4.6.0, =4.4.0, <4.4.18 (affected)
Solution: Upgrade to version 4.6.8 or above
Credit: BreachX Zero Day Labs
Red Hat
wireshark: Wireshark: Denial of Service via SSH protocol dissector crash
vendor_redhat·2026-08-19·CVSS 5.5
CVE-2026-76918 [MEDIUM] CWE-248 wireshark: Wireshark: Denial of Service via SSH protocol dissector crash
wireshark: Wireshark: Denial of Service via SSH protocol dissector crash
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
A flaw was found in Wireshark. A local attacker could exploit a vulnerability in the SSH (Secure Shell) protocol dissector, which is responsible for analyzing SSH network traffic. This flaw, triggered by user interaction, could lead to a crash of the Wireshark application, resulting in a denial of service (DoS).
Statement: A flaw was found in the SSH protocol dissector in Wireshark versions 4.4.0 through 4.4.18 and 4.6.0 through 4.6.7. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat Enterprise Linux 10 and Red Hat In-Vehicle OS ship an affected versi
VulDB
Wireshark up to 4.4.17/4.6.7 SSH Protocol Dissector denial of service
vuldb·2026-08-20·CVSS 5.5
CVE-2026-76918 [MEDIUM] Wireshark up to 4.4.17/4.6.7 SSH Protocol Dissector denial of service
A vulnerability categorized as problematic has been discovered in Wireshark up to 4.4.17/4.6.7. The impacted element is an unknown function of the component SSH Protocol Dissector. The manipulation results in denial of service.
This vulnerability is identified as CVE-2026-76918. The attack can be executed remotely. There is not any exploit available.
It is advisable to upgrade the affected component.
GHSA
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
ghsa_unreviewed·2026-08-20
CVE-2026-76918 [MEDIUM] CWE-122 SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-76918 wireshark: Wireshark: Denial of Service via SSH protocol dissector crash [fedora-all]
bugzilla·2026-08-21·CVSS 5.5
CVE-2026-76918 [MEDIUM] CVE-2026-76918 wireshark: Wireshark: Denial of Service via SSH protocol dissector crash [fedora-all]
CVE-2026-76918 wireshark: Wireshark: Denial of Service via SSH protocol dissector crash [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Discussion:
Fixed in the current version of wireshark. Closing.
Bugzilla
CVE-2026-76918 wireshark: Wireshark: Denial of Service via SSH protocol dissector crash
bugzilla·2026-08-19·CVSS 5.5
CVE-2026-76918 [MEDIUM] CVE-2026-76918 wireshark: Wireshark: Denial of Service via SSH protocol dissector crash
CVE-2026-76918 wireshark: Wireshark: Denial of Service via SSH protocol dissector crash
SSH protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
2026-08-19
Published