Vulnerability · Published Aug 19, 2026 · Assigned by GitLab
CVE-2026-76926Reachable Assertion in Wireshark
Low 3.1
In plain English
A low-severity security flaw in Wireshark from Wireshark Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.2%top 87.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
BUSMASTER file parser abnormal exit in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | wireshark | no fix listed | DEBIAN-CVE-2026-76926 |
| Debian:13 | wireshark | 4.4.18-0+deb13u1 | DEBIAN-CVE-2026-76926 |
| Debian:14 | wireshark | 4.6.9-1 | DEBIAN-CVE-2026-76926 |
| Ubuntu:24.04:LTS | wireshark | no fix listed | UBUNTU-CVE-2026-76926 |
| Ubuntu:26.04:LTS | wireshark | no fix listed | UBUNTU-CVE-2026-76926 |
| Ubuntu:26.10 | wireshark | no fix listed | UBUNTU-CVE-2026-76926 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wireshark Foundation | Wireshark | 4.6.0 – before 4.6.84.4.0 – before 4.4.18 |
Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L