🛡️ CVE-2026-6868 — wireshark

🟡 CVSS 5.5 — Medium ⚠️ Exploit Public CWE-121 NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2026-6868 is classified as CWE-121: Stack-based Buffer Overflow. An oversized write to a stack buffer overwrites saved state such as return addresses, which can redirect execution.

Affected software

CVE-2026-6868 is recorded against 1 package.

  • wireshark (from 4.6.0 up to 4.6.5)

Timeline and source

Published on 30 April 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

gitlab.com
www.wireshark.org

CVE-2026-6868 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-121
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-30
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
wireshark 4.6.0 4.6.5

Similar Threats

Exploit Protection

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CVE-2026-6868 carries CVSS 5.5 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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