CVE-2022-3725Public exploitNetwork attack vector

Application crash via unchecked OPUS frame count

Published Oct 27, 2022 · Updated May 9, 2025

Stack-based buffer overflow in Wireshark 3.6.0 through 3.6.8 allows attackers to crash the application via malformed OPUS packets. In dissect_opus(), frame_count can exceed MAX_FRAMES_COUNT before parse_size_field writes frame data beyond the fixed stack array. Processing injected traffic requires the dissector to receive the malformed packet; opening a crafted capture requires user interaction, and either path terminates Wireshark or TShark.

CVSS severity7.5
High
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Wireshark 3.6.0 through 3.6.8 allows attackers to crash the application via malformed OPUS packets. In dissect_opus(), frame_count can exceed MAX_FRAMES_COUNT before parse_size_field writes frame data beyond the fixed stack array. Processing injected traffic requires the dissector to receive the malformed packet; opening a crafted capture requires user interaction, and either path terminates Wireshark or TShark.

The record

CVE
CVE-2022-3725
Published
Oct 27, 2022
Updated
May 9, 2025
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 27, 2022CVE publishedPublication date reported by the CVE source.
  2. May 9, 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, <3.6.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=>=3.6.0, <3.6.8

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
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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