CVE-2025-13674

Application crash via freed BPv7 endpoint address

Published Nov 26, 2025 · Updated Mar 27, 2026

Use-after-free in the BPv7 dissector in Wireshark 4.6.0 allows attackers to crash the application via malformed packet data. The BPv7 cleanup path frees endpoint-address storage that remains referenced by conversation state, and a later TCPCL lookup reads it. Triggering the crash requires injected malformed live traffic or user interaction to open a malformed trace file; no data disclosure or modification is reported.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the BPv7 dissector in Wireshark 4.6.0 allows attackers to crash the application via malformed packet data. The BPv7 cleanup path frees endpoint-address storage that remains referenced by conversation state, and a later TCPCL lookup reads it. Triggering the crash requires injected malformed live traffic or user interaction to open a malformed trace file; no data disclosure or modification is reported.

The record

CVE
CVE-2025-13674
Published
Nov 26, 2025
Updated
Mar 27, 2026
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-824, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 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?

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  1. Affected versionversion=4.6.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=4.6.0

Published CVSS scores

5.5GitLab Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.7SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5SUSECVSS:3.1/AV:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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