CVE-2026-76888
published 2026-08-19CVE-2026-76888: RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
PriorityP334high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.21%
11.3th percentile
RDP 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
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat3.1LOW
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GitLab
Heap-based Buffer Overflow in Wireshark
vendor_gitlab·2026-08-19·CVSS 3.1
CVE-2026-76888 [LOW] CWE-122 Heap-based Buffer Overflow in Wireshark
Heap-based Buffer Overflow in Wireshark
RDP 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: Claude and Ada Logics
Red Hat
wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service
vendor_redhat·2026-08-19·CVSS 3.1
CVE-2026-76888 [LOW] CWE-120 wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service
wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service
RDP 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 remote attacker could exploit a heap-based buffer overflow vulnerability within the RDP (Remote Desktop Protocol) dissector. By crafting a malicious RDP packet, an attacker could cause the Wireshark application to crash, leading to a denial of service.
Statement: A flaw was found in the RDP dissector in Wireshark versions 4.4.0 through 4.4.17 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.
GHSA
RDP 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-2026-76888 [LOW] CWE-122 RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
VulDB
Wireshark up to 4.4.17/4.6.7 Dissector denial of service
vuldb·2026-08-20·CVSS 3.1
CVE-2026-76888 [LOW] Wireshark up to 4.4.17/4.6.7 Dissector denial of service
A vulnerability labeled 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 Dissector. Executing a manipulation can lead to denial of service.
This vulnerability is tracked as CVE-2026-76888. The attack can be launched remotely. No exploit exists.
The affected component should be upgraded.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-76888 wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service [fedora-all]
bugzilla·2026-08-21·CVSS 3.1
CVE-2026-76888 [LOW] CVE-2026-76888 wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service [fedora-all]
CVE-2026-76888 wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service [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.
RDP 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-2026-76888 wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service
bugzilla·2026-08-19·CVSS 3.1
CVE-2026-76888 [LOW] CVE-2026-76888 wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service
CVE-2026-76888 wireshark: Wireshark: Heap-based Buffer Overflow in RDP dissector leads to Denial of Service
RDP 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