CVE-2026-9759
published 2026-05-27CVE-2026-9759: ROHC protocol dissector crash in Wireshark 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15 allows denial of service
PriorityP417medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
0.09%
0.6th percentile
ROHC protocol dissector crash in Wireshark 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15 allows denial of service
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| gitlab | wireshark | — | — |
| wireshark | wireshark | — | — |
| wireshark | wireshark | >= 4.4.0 < 4.4.16 | 4.4.16 |
| wireshark | wireshark | >= 4.6.0 < 4.6.6 | 4.6.6 |
| wireshark_foundation | wireshark | >= 4.4.0 < 4.4.16 | 4.4.16 |
| wireshark_foundation | wireshark | >= 4.6.0 < 4.6.6 | 4.6.6 |
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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Red Hat
wireshark: NULL Pointer Dereference in Wireshark
vendor_redhat·2026-05-27·CVSS 5.5
CVE-2026-9759 [MEDIUM] CWE-476 wireshark: NULL Pointer Dereference in Wireshark
wireshark: NULL Pointer Dereference in Wireshark
A flaw was found in the ROHC dissector in Wireshark. This issue occurs when malformed packets are decoded from a pcap file or the network, causing a NULL pointer dereference, resulting in a denial of service.
Statement: This issue will cause a crash in Wireshark with no other security impact. Also, this flaw can only be exploited when a malformed pcap file is processed. Due to these reasons, this vulnerability has been rated with a moderate severity.
Mitigation: If the ROHC protocol dissector is not being used, it can be disabled via the "Enabled Protocols" dialog box in the Wireshark GUI application. This will also disable the protocol dissector when using "tshark", the command line tool.
See the links below for instructions to disable a
GitLab
NULL Pointer Dereference in Wireshark
vendor_gitlab·2026-05-27·CVSS 5.5
CVE-2026-9759 [MEDIUM] CWE-476 NULL Pointer Dereference in Wireshark
NULL Pointer Dereference in Wireshark
ROHC protocol dissector crash in Wireshark 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15 allows denial of service
Affected products: Wireshark
Affected versions: >=4.6.0, =4.4.0, <4.4.16 (affected)
Solution: Upgrade to Wireshark 4.6.6 or above
Credit: Arjun Basnet @ Securin Labs
GHSA
GHSA-q2f9-8cg7-wv42: ROHC protocol dissector crash in Wireshark 4
ghsa_unreviewed·2026-05-27
CVE-2026-9759 [MEDIUM] CWE-476 GHSA-q2f9-8cg7-wv42: ROHC protocol dissector crash in Wireshark 4
ROHC protocol dissector crash in Wireshark 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15 allows denial of service
VulDB
Wireshark up to 4.4.15/4.6.5 ROHC Protocol Dissector null pointer dereference (EUVD-2026-32629)
vuldb·2026-05-27·CVSS 5.5
CVE-2026-9759 [MEDIUM] Wireshark up to 4.4.15/4.6.5 ROHC Protocol Dissector null pointer dereference (EUVD-2026-32629)
A vulnerability identified as problematic has been detected in Wireshark up to 4.4.15/4.6.5. The affected element is an unknown function of the component ROHC Protocol Dissector. The manipulation leads to null pointer dereference.
This vulnerability is referenced as CVE-2026-9759. Remote exploitation of the attack is possible. No exploit is available.
You should upgrade the affected component.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-9759 wireshark: NULL Pointer Dereference in Wireshark [fedora-all]
bugzilla·2026-06-01·CVSS 5.5
CVE-2026-9759 [MEDIUM] CVE-2026-9759 wireshark: NULL Pointer Dereference in Wireshark [fedora-all]
CVE-2026-9759 wireshark: NULL Pointer Dereference in Wireshark [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.
Bugzilla
CVE-2026-9759 wireshark: NULL Pointer Dereference in Wireshark
bugzilla·2026-05-27·CVSS 5.5
CVE-2026-9759 [MEDIUM] CVE-2026-9759 wireshark: NULL Pointer Dereference in Wireshark
CVE-2026-9759 wireshark: NULL Pointer Dereference in Wireshark
ROHC protocol dissector crash in Wireshark 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15 allows denial of service
2026-05-27
Published