CVE-2026-3201Public exploitNetwork attack vector

Service crash via unbounded HID usage array

Published Feb 25, 2026 · Updated Feb 25, 2026

Memory exhaustion in the USB HID dissector in Wireshark 4.4.0 through 4.4.13 and 4.6.0 through 4.6.3 allows attackers to crash it. parse_report_descriptor() grows the field.usages array from packet-controlled USAGE_MINIMUM and USAGE_MAXIMUM values without limiting the range, permitting an allocation of roughly one element per value. Attackers can reach the dissector by injecting a malformed packet onto the monitored wire or persuading a user to open a malformed capture; the reported consequence is excessive memory consumption, an application hang, or a crash.

CVSS severity4.7
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory exhaustion in the USB HID dissector in Wireshark 4.4.0 through 4.4.13 and 4.6.0 through 4.6.3 allows attackers to crash it. parse_report_descriptor() grows the field.usages array from packet-controlled USAGE_MINIMUM and USAGE_MAXIMUM values without limiting the range, permitting an allocation of roughly one element per value. Attackers can reach the dissector by injecting a malformed packet onto the monitored wire or persuading a user to open a malformed capture; the reported consequence is excessive memory consumption, an application hang, or a crash.

The record

CVE
CVE-2026-3201
Published
Feb 25, 2026
Updated
Feb 25, 2026
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-1325, CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.4.0 <4.4.14
  2. Affected versionversion=4.6.0 <4.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=4.4.0 <4.4.14; version=4.6.0 <4.6.4

Published CVSS scores

7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.7GitLab Inc.CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1325Improperly Controlled Sequential Memory Allocation
CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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