CVE-2026-15172: FMP/NOTIFY protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

Routine

MEDIUM 5.5UPGRADE

CVE-2026-15172 is a medium-severity flaw (CVSS 5.5) affecting wireshark. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FMP/NOTIFY protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-606
Published	2026-07-08
Last modified	2026-10-25

Publisher (CNA): GitLab Inc. · Vendor: wireshark

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-08 21:16 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

wireshark wireshark UPGRADE

Affected: >= 4.4.0 and < 4.4.17 · >= 4.6.0 and < 4.6.7

Fixed in: 4.4.17, 4.6.7

Safe to downgrade to: a release before 4.4.0

1. Check installed version

apt-cache policy wireshark || rpm -q wireshark || wireshark --version

2. UPGRADE to 4.4.17 (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 4.4.0 (Debian / Ubuntu)

apt-cache madison wireshark sudo apt install wireshark=<VERSION_BEFORE_4.4.0> 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_4.4.0> 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.

Quick answers

How do I fix CVE-2026-15172?

wireshark: upgrade to 4.4.17, 4.6.7. Exact commands for each OS are on this page.

Is CVE-2026-15172 being exploited?

CVE-2026-15172 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-15172 affect?

CVE-2026-15172 affects wireshark. Severity is medium (CVSS 5.5). FMP/NOTIFY protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service

How urgent is CVE-2026-15172?

Priority 25/100. Public exploit reference

Related CVEs

CVE-2026-15167 HIGH 7.5 UPGRADE DBS Etherwatch file parser crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
CVE-2026-15169 MEDIUM 5.5 UPGRADE UMTS FP protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
CVE-2026-15163 MEDIUM 5.5 UPGRADE Multiple protocol dissector infinite loops in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allow denial of ser
CVE-2026-15164 MEDIUM 5.5 UPGRADE Crash in ciscodump 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
CVE-2026-15165 MEDIUM 5.5 UPGRADE TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

References

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