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UBUNTU-CVE-2026-15170

0
Medium
VulnerabilityCVE-2026-15170gcveosvubuntu-cve-2026-15170ubuntu-pro-14-04-ltsubuntu-pro-16-04-ltsubuntu-pro-18-04-ltsubuntu-pro-20-04-ltsubuntu-pro-22-04-ltsubuntu-24-04-ltsubuntu-25-10ubuntu-26-04-lts
Published: 07/08/2026 (07/08/2026, 21:16:00 UTC)
Source: GCVE Database
Product: wireshark

Description

A vulnerability in the Z39.50 protocol dissector of Wireshark versions 4.4.0 to 4.4.16 and 4.6.0 to 4.6.6 can cause the application to crash, resulting in a denial of service condition.

CVSS v3.1

Score 5.5medium

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected software

Ubuntu:Pro:14.04:LTSmore threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]~ubuntu14.04.0~esm3?arch=source&distro=esm-infra-legacy/trusty
Affected versions
=1.10.2-1=1.10.3-1=1.10.5-1ubuntu1=1.10.5-2=1.10.6-1=1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1=2.6.3-1~ubuntu14.04.1=2.6.4-2~ubuntu14.04.1=2.6.5-1~ubuntu14.04.1=2.6.6-1~ubuntu14.04.0=2.6.8-1~ubuntu14.04.0~esm1=2.6.10-1~ubuntu14.04.0~esm1=2.6.10-1~ubuntu14.04.0~esm2=2.6.10-1~ubuntu14.04.0~esm3
Ubuntu:Pro:16.04:LTSmore threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]~ubuntu16.04.0+esm2?arch=source&distro=esm-apps/xenial
Affected versions
=1.12.7+g7fc8978-1=1.12.8+g5b6e543-2=2.0.1+g59ea380-3build1=2.0.2+ga16e22e-1=2.2.6+g32dac6a-2ubuntu0.16.04=2.6.3-1~ubuntu16.04.1=2.6.4-2~ubuntu16.04.0=2.6.5-1~ubuntu16.04.0=2.6.6-1~ubuntu16.04.0=2.6.8-1~ubuntu16.04.0=2.6.10-1~ubuntu16.04.0=2.6.10-1~ubuntu16.04.0+esm1=2.6.10-1~ubuntu16.04.0+esm2
Ubuntu:Pro:18.04:LTSmore threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]~ubuntu18.04.0+esm2?arch=source&distro=esm-apps/bionic
Affected versions
=2.4.2-1=2.4.3-1=2.4.4-1=2.4.5-1=2.6.3-1~ubuntu18.04.1=2.6.4-2~ubuntu18.04.0=2.6.5-1~ubuntu18.04.0=2.6.6-1~ubuntu18.04.0=2.6.8-1~ubuntu18.04.0=2.6.10-1~ubuntu18.04.0=2.6.10-1~ubuntu18.04.0+esm1=2.6.10-1~ubuntu18.04.0+esm2
Ubuntu:Pro:20.04:LTSmore threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/focal
Affected versions
=3.0.5-1=3.0.7-1=3.2.1-1=3.2.2-1=3.2.3-1=3.2.3-1ubuntu0.1~esm1=3.2.3-1ubuntu0.1~esm2
Ubuntu:Pro:22.04:LTSmore threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/jammy
Affected versions
=3.4.7-1~exp1=3.4.9-1=3.6.2-1ubuntu1=3.6.2-2=3.6.2-2ubuntu0.1~esm1
Ubuntu:24.04:LTSmore threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]?arch=source&distro=noble
Affected versions
=4.0.8-1=4.0.10-1=4.0.11-1=4.2.0-1=4.2.2-1=4.2.2-1.1build1=4.2.2-1.1build2=4.2.2-1.1build3
Ubuntu:25.10more threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]?arch=source&distro=questing
Affected versions
=4.4.5-1=4.4.6-2=4.4.6-2build1=4.4.7-1
Ubuntu:26.04:LTSmore threats →ghsa
wireshark
pkg:deb/ubuntu/[email protected]?arch=source&distro=resolute
Affected versions
=4.4.7-1=4.6.0-1=4.6.1-2=4.6.2-3=4.6.3-1=4.6.4-1

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/16/2026, 13:57:25 UTC

Technical Analysis

Wireshark versions 4.4.0 through 4.4.16 and 4.6.0 through 4.6.6 contain a vulnerability in the Z39.50 protocol dissector that can be triggered to cause the application to crash. This results in a denial of service (DoS) impact. The vulnerability requires local access (AV:L) and low attack complexity (AC:L) but no privileges (PR:N) and user interaction (UI:R). The scope is unchanged (S:U), and the impact is limited to availability (A:H) with no confidentiality or integrity impact.

Potential Impact

Exploitation of this vulnerability causes Wireshark to crash, leading to denial of service. There is no impact on confidentiality or integrity. The attack requires local access and user interaction, with low complexity and no privileges required.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is confirmed, avoid processing untrusted Z39.50 protocol data in affected Wireshark versions to mitigate risk.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-15170
Osv Schema Version
1.7.0
Aliases
[]
Ecosystems
["Ubuntu:Pro:14.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
Database Specific Severity
null
Cvss Version
3.1

Threat ID: 6a58b4f168715ace43db1dd5

Added to database: 07/16/2026, 10:39:45 UTC

Last enriched: 07/16/2026, 13:57:25 UTC

Last updated: 07/31/2026, 19:24:49 UTC

Views: 7

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