CVE-2023-0411Public exploitNetwork attack vector

Denial of service via excessive dissector loops

Published Jan 24, 2023 · Updated Nov 3, 2025

Excessive iteration in Wireshark 3.6.0 through 3.6.10 and 4.0.0 through 4.0.2 allows attackers to exhaust CPU via malformed packet data. The BPv6, NCP, and RTPS dissectors continue processing malformed protocol structures instead of terminating, causing excessive loops and, for RTPS, memory exhaustion. Exploitation requires packet injection onto a monitored link or user interaction to open a crafted capture file, resulting in a hang or crash rather than data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Excessive iteration in Wireshark 3.6.0 through 3.6.10 and 4.0.0 through 4.0.2 allows attackers to exhaust CPU via malformed packet data. The BPv6, NCP, and RTPS dissectors continue processing malformed protocol structures instead of terminating, causing excessive loops and, for RTPS, memory exhaustion. Exploitation requires packet injection onto a monitored link or user interaction to open a crafted capture file, resulting in a hang or crash rather than data disclosure or modification.

The record

CVE
CVE-2023-0411
Published
Jan 24, 2023
Updated
Nov 3, 2025
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-834, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 24, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>=3.6.0, <3.6.11
  2. Affected versionversion=>=4.0.0, <4.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=>=3.6.0, <3.6.11; version=>=4.0.0, <4.0.3

Published CVSS scores

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

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-834Excessive Iteration
T1499.004Application or System Exploitation

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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