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EPSS 0.1%top 98%

UBUNTU-CVE-2026-15171

0
Medium
VulnerabilityCVE-2026-15171gcveosvubuntu-cve-2026-15171ubuntu-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 Wireshark versions 4.4.0 to 4.4.16 and 4.6.0 to 4.6.6 causes the SSH protocol dissector to crash, resulting in a denial of service condition. This affects multiple Ubuntu package versions of Wireshark. The vulnerability requires user interaction and local access to the system. No known exploits are reported in the wild.

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, 13:57:16 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 SSH protocol dissector that can be triggered to cause the application to crash. This crash leads to a denial of service (DoS) condition when processing malformed SSH protocol data. The vulnerability affects multiple Ubuntu package versions of Wireshark as listed. There is no information provided about exploitation in the wild or specific attack vectors beyond the crash.

Potential Impact

Successful exploitation of this vulnerability results in denial of service by crashing Wireshark when it processes certain SSH protocol data. There is no indication of confidentiality or integrity impact. The denial of service could disrupt network traffic analysis or monitoring activities relying on Wireshark.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor official Wireshark and Ubuntu security advisories for updates and apply patches once available. Until then, avoid processing untrusted SSH traffic with affected Wireshark versions to reduce risk.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-15171
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: 6a58b4f168715ace43db1dd1

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

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

Last updated: 07/31/2026, 19:24:48 UTC

Views: 5

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