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Wireshark CVE-2026-15163

| EUVDEUVD-2026-42411 HIGH
Loop with Unreachable Exit Condition (Infinite Loop) (CWE-835)
2026-07-08 cve@gitlab.com GHSA-3qvj-9wrj-3gpm
Denial Of Service Wireshark Red Hat Suse
7.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
7.5 HIGH

Crafted packets reach the dissector without auth or interaction (AV:N/AC:L/PR:N/UI:N); impact is limited to a crash/hang so C:N/I:N/A:H.

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

Primary rating from NVD.

CVSS VectorNVD

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

Lifecycle Timeline

7
Analysis Updated
Jul 09, 2026 - 20:18 vuln.today
v3 (cvss_changed)
Analysis Updated
Jul 09, 2026 - 20:17 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Jul 09, 2026 - 20:07 vuln.today
cvss_changed
Severity Changed
Jul 09, 2026 - 20:07 NVD
MEDIUM HIGH
CVSS changed
Jul 09, 2026 - 20:07 NVD
5.5 (MEDIUM) 7.5 (HIGH)
Analysis Generated
Jul 08, 2026 - 22:09 vuln.today
Patch available
Jul 08, 2026 - 22:04 EUVD

DescriptionNVD

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 service

AnalysisAI

Denial of service in Wireshark 4.6.0-4.6.6 and 4.4.0-4.4.16 lets a remote attacker crash or hang the application by feeding it crafted packets that trigger infinite loops in multiple protocol dissectors. No public exploit is identified at time of analysis, and the flaw is limited to availability - no code execution or data exposure. Real-world urgency is modest: EPSS sits at 0.12% and CISA SSVC rates exploitation as 'none' with only partial technical impact.

Technical ContextAI

Wireshark is the most widely used network protocol analyzer, dissecting captured traffic through hundreds of protocol-specific 'dissectors.' The root cause is CWE-835 (Loop with Unreachable Exit Condition / 'infinite loop'): one or more dissectors fail to advance their parsing offset or lack a proper termination check when handling malformed or specially structured protocol fields, causing the dissector to loop indefinitely. Because dissection runs automatically both on live capture and when opening saved capture files, any packet or file that reaches the affected dissector can stall the process. The CPE data identifies the affected component as the Wireshark application itself (cpe:2.3:a:wireshark:wireshark); the specific dissectors are tracked in the vendor's GitLab work items 21275, 21277, 21330, and 21383.

RemediationAI

Vendor-released patch: upgrade to Wireshark 4.6.7 (for the 4.6.x branch) or 4.4.17 (for the 4.4.x branch) as described in advisory wnpa-sec-2026-61 (https://www.wireshark.org/security/wnpa-sec-2026-61.html). If immediate patching is not possible, reduce exposure by not opening untrusted capture files and by avoiding live capture on untrusted network segments; where feasible, disable the specific affected dissectors via Analyze > Enabled Protocols in the Wireshark UI, accepting the trade-off that those protocols will no longer be decoded. For automated or headless processing, prefer running dissection in a sandboxed or resource-limited environment (e.g., with CPU/time limits) so an infinite loop degrades gracefully rather than hanging indefinitely.

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BT SDP dissector memory leak in Wireshark 4.0.0 to 4.0.7 and 3.6.0 to 3.6.15 allows denial of service via packet injecti
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RPCoRDMA dissector crash in Wireshark 4.0.0 to 4.0.4 and 3.6.0 to 3.6.12 allows denial of service via packet injection o

Same weakness CWE-835 – Loop with Unreachable Exit Condition (Infinite Loop)

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7.5
CVE-2024-43366 CRITICAL POC
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CVE-2026-25533 HIGH POC
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CVE-2026-66730 HIGH POC
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Same technique Denial Of Service

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CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

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-2026-15163 vulnerability details – vuln.today
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