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Wireshark CVE-2026-15172

| EUVDEUVD-2026-42419 MEDIUM
Unchecked Input for Loop Condition (CWE-606)
2026-07-08 cve@gitlab.com GHSA-45fx-qq48-m87m
Denial Of Service Red Hat Wireshark Suse
5.5
CVSS 3.1 · Vendor: gitlab
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Severity by source

Vendor (gitlab) PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vuln.today AI
5.5 MEDIUM

Exploitation requires local user to open a crafted capture file (AV:L, UI:R); impact is limited to application crash with no confidentiality or integrity loss.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from Vendor (gitlab).

CVSS VectorVendor: gitlab

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 08, 2026 - 22:16 vuln.today
Patch available
Jul 08, 2026 - 22:04 EUVD

DescriptionCVE.org

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

AnalysisAI

The FMP/NOTIFY protocol dissector in Wireshark 4.6.0-4.6.6 and 4.4.0-4.4.16 crashes when processing malformed packet data, resulting in a denial of service against the application. Exploitation requires a victim to open a crafted packet capture file or analyze injected traffic, making this a social-engineering-dependent vector rather than a remotely triggerable flaw. A vendor-released patch is available in versions 4.6.7 and 4.4.17; no public exploit or CISA KEV listing has been identified at time of analysis.

Technical ContextAI

Wireshark is a widely deployed network protocol analyzer that includes dissectors for hundreds of protocols, including FMP (Federated Media Protocol) and NOTIFY. CWE-606 (Unchecked Input for Loop Condition) identifies the root cause: the dissector fails to validate user-controlled input before using it to govern a loop construct, allowing a crafted packet to trigger an infinite loop or abnormal termination. This class of flaw is common in protocol parsers that process variable-length or recursively structured fields without enforcing upper bounds on iteration. Affected CPE ranges cover Wireshark 4.6.0 through 4.6.6 and 4.4.0 through 4.4.16, as confirmed by the ENISA EUVD entry EUVD-2026-42419.

RemediationAI

The primary fix is to upgrade to Wireshark 4.6.7 (if running the 4.6.x branch) or Wireshark 4.4.17 (if running the 4.4.x branch), as confirmed by the ENISA EUVD version bounds and the vendor advisory at https://www.wireshark.org/security/wnpa-sec-2026-54.html. If immediate patching is not possible, analysts should avoid opening packet capture files received from untrusted or unknown sources, as this is the primary exploitation vector given AV:L and UI:R. As a compensating control, disabling or removing the FMP/NOTIFY dissector via Wireshark's Analyze > Enabled Protocols menu can prevent the vulnerable code path from executing; note this will suppress decoding of FMP and NOTIFY traffic. Restricting Wireshark usage to known-good capture files from controlled network taps further reduces exposure.

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Same weakness CWE-606 – Unchecked Input for Loop Condition

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected

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CVE-2026-15172 vulnerability details – vuln.today
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