CVE-2026-76924
published 2026-08-19CVE-2026-76924: Kerberos protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
PriorityP417medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
0.14%
3.1th percentile
Kerberos 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
Out-of-bounds Read in Wireshark
vendor_gitlab·2026-08-19·CVSS 5.5
CVE-2026-76924 [MEDIUM] CWE-125 Out-of-bounds Read in Wireshark
Out-of-bounds Read in Wireshark
Kerberos 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: Aisle Research (Dmitrijs Trizna, Luigino Camastra, Ze Sheng (O2Lab & TAMU), Igor Morgenstern)
Red Hat
wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector
vendor_redhat·2026-08-19·CVSS 5.5
CVE-2026-76924 [MEDIUM] CWE-125 wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector
wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector
A flaw was found in Wireshark. An out-of-bounds read vulnerability exists within the Kerberos protocol dissector. This flaw can be triggered by processing a specially crafted Kerberos packet, leading to a crash of the Wireshark application. This results in a denial of service (DoS) for the user.
Statement: An out-of-bounds read was found in the Kerberos 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 version of Wireshark.
Mitigation: Do not open untrusted packet capture files or ca
VulDB
Wireshark up to 4.4.17/4.6.7 Kerberos Protocol Dissector denial of service
vuldb·2026-08-20·CVSS 5.5
CVE-2026-76924 [MEDIUM] Wireshark up to 4.4.17/4.6.7 Kerberos Protocol Dissector denial of service
A vulnerability classified as problematic has been found in Wireshark up to 4.4.17/4.6.7. Affected by this issue is some unknown functionality of the component Kerberos Protocol Dissector. The manipulation leads to denial of service.
This vulnerability is documented as CVE-2026-76924. The attack needs to be performed locally. There is not any exploit available.
It is recommended to upgrade the affected component.
GHSA
Kerberos 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-2026-76924 [MEDIUM] CWE-125 Kerberos protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Kerberos 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-2026-76924 wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector [fedora-all]
bugzilla·2026-08-20·CVSS 5.5
CVE-2026-76924 [MEDIUM] CVE-2026-76924 wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector [fedora-all]
CVE-2026-76924 wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector [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.
Kerberos protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Bugzilla
CVE-2026-76924 wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector
bugzilla·2026-08-19·CVSS 5.5
CVE-2026-76924 [MEDIUM] CVE-2026-76924 wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector
CVE-2026-76924 wireshark: Wireshark: Denial of Service via Out-of-bounds Read in Kerberos Dissector
Kerberos 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