CVE-2023-0666Public exploitNetwork attack vector

Process crash via unchecked RTPS name length

Published Jun 7, 2023 · Updated Nov 3, 2025

Heap-based buffer overflow in the RTPS dissector in Wireshark 4.0.0 through 4.0.5 allows remote attackers to crash the process. The rtps_util_add_type_library_type function passes an attacker-controlled packet length to g_strlcpy as the destination size for a fixed 256-byte member_name buffer. Exploitation requires a malformed RTPS packet to be captured live or opened from a trace file; code execution in the Wireshark process is possible but unconfirmed.

CVSS severity6.5
Medium
EPSS probability2.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in the RTPS dissector in Wireshark 4.0.0 through 4.0.5 allows remote attackers to crash the process. The rtps_util_add_type_library_type function passes an attacker-controlled packet length to g_strlcpy as the destination size for a fixed 256-byte member_name buffer. Exploitation requires a malformed RTPS packet to be captured live or opened from a trace file; code execution in the Wireshark process is possible but unconfirmed.

The record

CVE
CVE-2023-0666
Published
Jun 7, 2023
Updated
Nov 3, 2025
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-787, CWE-122, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 7, 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=4.0.0 <=4.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=4.0.0 <=4.0.5

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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 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-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

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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