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CVE-2026-15166VulnerabilityPublished

Wireshark · IEEE 802.11 protocol dissector crash

Affects wiresharkSource GCVE Database

0
Authoritative record:CVE-2026-15166· Medium 5.5

Not known to be exploited · CVSS 5.5 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.04 LTSwiresharkpkg:deb/ubuntu/wireshark@4.6.4-1?arch=source&distro=resoluteOther threatsAffected
  • 4.4.7-1 – 4.6.4-1
6 affected builds
Fixed in–
Ubuntu 25.10wiresharkpkg:deb/ubuntu/wireshark@4.4.7-1?arch=source&distro=questingOther threatsAffected
  • 4.4.5-1 – 4.4.7-1
4 affected builds
Fixed in–
Ubuntu 24.04 LTSwiresharkpkg:deb/ubuntu/wireshark@4.2.2-1.1build3?arch=source&distro=nobleOther threatsAffected
  • 4.0.8-1 – 4.2.2-1.1build3
8 affected builds
Fixed in–
Ubuntu Pro 22.04 LTSwiresharkpkg:deb/ubuntu/wireshark@3.6.2-2ubuntu0.1~esm1?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 3.4.7-1~exp1 – 3.6.2-2ubuntu0.1~esm1
5 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSwiresharkpkg:deb/ubuntu/wireshark@3.2.3-1ubuntu0.1~esm2?arch=source&distro=esm-apps/focalOther threatsAffected
  • 3.0.5-1 – 3.2.3-1ubuntu0.1~esm2
7 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSwiresharkpkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu18.04.0+esm2?arch=source&distro=esm-apps/bionicOther threatsAffected
  • 2.4.2-1 – 2.6.10-1~ubuntu18.04.0+esm2
12 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, users should limit local access to trusted users and avoid opening untrusted capture files or interacting with suspicious network traffic in Wireshark.

Description

CVE-2026-15166 is a vulnerability in the IEEE 802.11 protocol dissector of Wireshark versions 4.4.0 to 4.4.16 and 4.6.0 to 4.6.6 that can cause the application to crash, leading to a denial of service. Exploitation requires local access with low privileges and user interaction. Multiple Ubuntu package versions of Wireshark are affected. No public exploit or patch information is currently available.

References

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