CVE-2026-6868
published 2026-04-30CVE-2026-6868: HTTP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
PriorityP336high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.19%
9.1th percentile
HTTP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| gitlab | wireshark | — | — |
| wireshark | wireshark | — | — |
| wireshark | wireshark | >= 4.4.0 < 4.4.15 | 4.4.15 |
| wireshark | wireshark | >= 4.6.0 < 4.6.5 | 4.6.5 |
| wireshark_foundation | wireshark | >= 4.4.0 < 4.4.15 | 4.4.15 |
| wireshark_foundation | wireshark | >= 4.6.0 < 4.6.5 | 4.6.5 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat5.5MEDIUM
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GitLab
Stack-based Buffer Overflow in Wireshark
vendor_gitlab·2026-04-30·CVSS 5.5
CVE-2026-6868 [MEDIUM] CWE-121 Stack-based Buffer Overflow in Wireshark
Stack-based Buffer Overflow in Wireshark
HTTP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Affected products: Wireshark
Affected versions: >=4.6.0, =4.4.0, <4.4.15 (affected)
Solution: Upgrade to version 4.6.5 or above
Credit: Sharon Brizinov
Red Hat
wireshark: Wireshark: Denial of Service via malicious network capture file
vendor_redhat·2026-04-30·CVSS 5.5
CVE-2026-6868 [MEDIUM] CWE-617 wireshark: Wireshark: Denial of Service via malicious network capture file
wireshark: Wireshark: Denial of Service via malicious network capture file
A flaw was found in Wireshark. A local user could be tricked into opening a specially crafted network capture file. This file, containing malicious HTTP data, could cause Wireshark to crash, leading to a denial of service.
Package: wireshark (Red Hat Enterprise Linux 10) - Fix deferred
Package: wireshark (Red Hat Enterprise Linux 6) - Fix deferred
Package: wireshark (Red Hat Enterprise Linux 7) - Fix deferred
Package: wireshark (Red Hat Enterprise Linux 8) - Fix deferred
Package: wireshark (Red Hat Enterprise Linux 9) - Fix deferred
VulDB
Wireshark up to 4.4.14/4.6.4 HTTP Protocol Dissector stack-based overflow (EUVD-2026-26309 / WID-SEC-2026-1311)
vuldb·2026-05-01·CVSS 5.5
CVE-2026-6868 [MEDIUM] Wireshark up to 4.4.14/4.6.4 HTTP Protocol Dissector stack-based overflow (EUVD-2026-26309 / WID-SEC-2026-1311)
A vulnerability was found in Wireshark up to 4.4.14/4.6.4. It has been rated as critical. This affects an unknown part of the component HTTP Protocol Dissector. This manipulation causes stack-based buffer overflow.
This vulnerability is handled as CVE-2026-6868. The attack can be initiated remotely. There is not any exploit available.
Upgrading the affected component is advised.
GHSA
GHSA-3cr4-47vg-rm82: HTTP protocol dissector crash in Wireshark 4
ghsa_unreviewed·2026-04-30
CVE-2026-6868 [MEDIUM] CWE-121 GHSA-3cr4-47vg-rm82: HTTP protocol dissector crash in Wireshark 4
HTTP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
No detection rules found.
No public exploits indexed.
2026-04-30
Published