CVE-2022-4345Network attack vector

Analysis hang via malformed packet dissection

Published Jan 12, 2023 · Updated Nov 3, 2025

Infinite loops in Wireshark 3.6.0 through 3.6.9 and 4.0.0 through 4.0.1 allow attackers to interrupt analysis with malformed packets. The BPv6, OpenFlow, and Kafka dissectors fail to terminate while parsing malformed packet data, consuming excessive CPU resources. Triggering requires packet injection onto monitored traffic or user interaction to open a crafted capture file; the result is a packet-analysis hang without reported data access or modification.

CVSS severity6.5
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Infinite loops in Wireshark 3.6.0 through 3.6.9 and 4.0.0 through 4.0.1 allow attackers to interrupt analysis with malformed packets. The BPv6, OpenFlow, and Kafka dissectors fail to terminate while parsing malformed packet data, consuming excessive CPU resources. Triggering requires packet injection onto monitored traffic or user interaction to open a crafted capture file; the result is a packet-analysis hang without reported data access or modification.

The record

CVE
CVE-2022-4345
Published
Jan 12, 2023
Updated
Nov 3, 2025
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-835, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record 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=>=3.6.0, <3.6.10
  2. Affected versionversion=>=4.0.0, <4.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=>=3.6.0, <3.6.10; version=>=4.0.0, <4.0.2

Published CVSS scores

6.3GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
6.5NIST NVDCVSS:3.1/AV:N/AC:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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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