PatchTheCVECVE-2026-19694: TTX Logger file parser crash in 4.6.0 to 4.6.7 allows denial of service
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Routine
MEDIUM 4.7UPGRADE
CVE-2026-19694 is a medium-severity flaw (CVSS 4.7) affecting wireshark. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
TTX Logger file parser crash in 4.6.0 to 4.6.7 allows denial of service
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.7 (Medium) |
| Attack vector | Local |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.1% (top 98%) |
| CISA exploited list | No |
| Weakness | CWE-122 |
| Published | 2026-08-13 |
| Last modified | 2026-10-23 |
Publisher (CNA): GitLab Inc. · Vendor: wireshark
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
wireshark wireshark UPGRADE
Affected: >= 4.6.0 and < 4.6.8
Fixed in: 4.6.8
Safe to downgrade to: a release before 4.6.0
1. Check installed version
apt-cache policy wireshark || rpm -q wireshark || wireshark --version
2. UPGRADE to 4.6.8 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade wireshark
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade wireshark
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 4.6.0 (Debian / Ubuntu)
apt-cache madison wireshark
sudo apt install wireshark=<VERSION_BEFORE_4.6.0>
sudo apt-mark hold wireshark
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list wireshark
sudo dnf downgrade wireshark-<VERSION_BEFORE_4.6.0>
sudo dnf versionlock add wireshark
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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