CVE-2026-76891: CWE-825: Expired Pointer Dereference in Wireshark Foundation Wireshark
CVE-2026-76891 is a low-severity vulnerability in Wireshark that causes a crash in the sharkd component due to expired pointer dereference. It affects versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18, resulting in a denial of service condition.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-825 (Expired Pointer Dereference), exists in the Wireshark Foundation's Wireshark product. Specifically, a crash occurs in the sharkd daemon in versions 4.6.0 through 4.6.7 and 4.4.0 through 4.4.18. The flaw allows an attacker to cause a denial of service by triggering the expired pointer dereference, leading to a crash of the service. The CVSS v3.1 base score is 3.1, indicating low severity. No official patch or remediation level has been published yet, and no known exploits are reported in the wild.
Potential Impact
The impact of this vulnerability is limited to denial of service due to a crash in the sharkd component of Wireshark. There is no confidentiality, integrity, or elevated privilege impact reported. The attack vector is network-based with high attack complexity and requires user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor vendor communications for updates. No specific mitigation steps are indicated by the vendor at this time.
CVE-2026-76891: CWE-825: Expired Pointer Dereference in Wireshark Foundation Wireshark
Description
CVE-2026-76891 is a low-severity vulnerability in Wireshark that causes a crash in the sharkd component due to expired pointer dereference. It affects versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18, resulting in a denial of service condition.
CVSS v3.1
Score 3.1low
Affected software
pkg:github/wireshark/wiresharkRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-825 (Expired Pointer Dereference), exists in the Wireshark Foundation's Wireshark product. Specifically, a crash occurs in the sharkd daemon in versions 4.6.0 through 4.6.7 and 4.4.0 through 4.4.18. The flaw allows an attacker to cause a denial of service by triggering the expired pointer dereference, leading to a crash of the service. The CVSS v3.1 base score is 3.1, indicating low severity. No official patch or remediation level has been published yet, and no known exploits are reported in the wild.
Potential Impact
The impact of this vulnerability is limited to denial of service due to a crash in the sharkd component of Wireshark. There is no confidentiality, integrity, or elevated privilege impact reported. The attack vector is network-based with high attack complexity and requires user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor vendor communications for updates. No specific mitigation steps are indicated by the vendor at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-19T22:35:19.932Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8633c5acd9273b49b8ad08
Added to database: 08/19/2026, 22:52:53 UTC
Last enriched: 08/19/2026, 23:09:50 UTC
Last updated: 08/20/2026, 02:52:43 UTC
Views: 8
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