CVE-2026-0959Public exploitNetwork attack vector

Analyzer crash via fixed per-STA array

Published Jan 14, 2026 · Updated Jan 14, 2026

Out-of-bounds write in Wireshark 4.4.0 through 4.4.12 and 4.6.0 through 4.6.2 allows attackers to crash the analyzer. The dissect_multi_link function writes per-STA multi-link subelements into a fixed 16-entry stack array while processing a crafted IEEE 802.11 packet. Exploitation requires injection of a malformed packet onto a monitored network or user interaction to open a malformed capture file, and the demonstrated consequence is a process crash.

CVSS severity5.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Wireshark 4.4.0 through 4.4.12 and 4.6.0 through 4.6.2 allows attackers to crash the analyzer. The dissect_multi_link function writes per-STA multi-link subelements into a fixed 16-entry stack array while processing a crafted IEEE 802.11 packet. Exploitation requires injection of a malformed packet onto a monitored network or user interaction to open a malformed capture file, and the demonstrated consequence is a process crash.

The record

CVE
CVE-2026-0959
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
Wireshark Foundation
Product
Wireshark
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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?

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

  1. Affected versionversion=4.4.0 <4.4.13
  2. Affected versionversion=4.6.0 <4.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wireshark Foundation · Wiresharkversion=4.4.0 <4.4.13; version=4.6.0 <4.6.3

Published CVSS scores

5.3GitLab Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5NVDCVSS: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.

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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
T1204.002Malicious File

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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