CVE-2026-76884 Buffer Over-read in Wireshark
A buffer over-read in the ERF file parser allows attackers to cause a denial of service by providing a malicious file to Wireshark users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-76884?
CVE-2026-76884 is a low-severity denial of service vulnerability in Wireshark Wireshark, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
ERF file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Weakness: CWE-126
Which versions are affected by CVE-2026-76884?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2026-76884?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-76884 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76884 exists.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as AZL-96839, DEBIAN-CVE-2026-76884, GHSA-9hh6-vc2m-phg6, MINI-rqjg-mw9v-w98m, UBUNTU-CVE-2026-76884.