CVE-2026-76929
Out-of-bounds Read in Wireshark
Description
Pcapng file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
INFO
Published Date :
Aug. 19, 2026, 11:16 p.m.
Last Modified :
Aug. 31, 2026, 2:51 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | ceab7361-8a18-47b1-92ba-4d7d25f6715a | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Wireshark to a non-vulnerable version.
- Ensure Wireshark is updated regularly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-76929.
| URL | Resource |
|---|---|
| https://gitlab.com/wireshark/wireshark/-/work_items/21460 | Exploit Mitigation Vendor Advisory |
| https://www.wireshark.org/security/wnpa-sec-2026-84.html | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-76929 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-76929
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-76929 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-76929 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 31, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 4.6.0 up to (excluding) 4.6.8 *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 4.4.0 up to (excluding) 4.4.18 Added Reference Type GitLab Inc.: https://gitlab.com/wireshark/wireshark/-/work_items/21460 Types: Exploit, Mitigation, Vendor Advisory Added Reference Type GitLab Inc.: https://www.wireshark.org/security/wnpa-sec-2026-84.html Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 20, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-76929', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-20T16:03:40.643750Z'} -
New CVE Received by [email protected]
Aug. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Wireshark Foundation', 'product': 'Wireshark', 'versions': [{'status': 'affected', 'version': '4.6.0', 'lessThan': '4.6.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.4.0', 'lessThan': '4.4.18', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description Pcapng file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service Added CVSS V3.1 AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H Added CWE CWE-125 Added Reference https://gitlab.com/wireshark/wireshark/-/work_items/21460 Added Reference https://www.wireshark.org/security/wnpa-sec-2026-84.html