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No exploitation reportedFix available

CVE-2021-22173

No exploitation reported by the sources we read.

  • Published2021-02-17
  • Fixed in3.4.3
  • WeaknessCWE-401

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Memory leak in USB HID dissector in Wireshark 3.4.0 to 3.4.2 allows denial of service via packet injection or crafted capture file

Timeline

dates in UTC
  1. 2021-02-1715:15CVE publishedNVD

Versions per branch

NVD
Wireshark
BranchAffectedFixed in
3.4≥ 3.4.0, < 3.4.33.4.3
Fedoraproject fedora
BranchAffectedFixed in
32.x= 32no fix published
33.x= 33no fix published
Oracle zfs storage appliance
BranchAffectedFixed in
8.8= 8.8no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libqt5-qtmultimediaSUSE:Manager Server 4.0all versions · fixed in 5.9.7-7.2.1
  • libqt5-qtmultimediaSUSE:Manager Retail Branch Server 4.0all versions · fixed in 5.9.7-7.2.1
  • libqt5-qtmultimediaSUSE:Manager Proxy 4.0all versions · fixed in 5.9.7-7.2.1
  • libqt5-qtmultimediaSUSE:Linux Enterprise Server for SAP Applications 15 SP1all versions · fixed in 5.9.7-7.2.1
  • libqt5-qtmultimediaSUSE:Linux Enterprise Server 15 SP1-LTSSall versions · fixed in 5.9.7-7.2.1
  • libqt5-qtmultimediaSUSE:Linux Enterprise Server 15 SP1-BCLall versions · fixed in 5.9.7-7.2.1
  • libqt5-qtmultimediaSUSE:Linux Enterprise High Performance Computing 15 SP1-LTSSall versions · fixed in 5.9.7-7.2.1
  • libqt5-qtmultimediaSUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOSall versions · fixed in 5.9.7-7.2.1

68 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-22173 Red Hat Product Security

    wireshark: USB HID dissector memory leak

Full record on NVD

Fix

  1. Update Wireshark to 3.4.3
  2. Workaround from the vendor Red Hat Product Security CVE-2021-22173 · 16 productsMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.13.7known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-401read 2026-10-23
  • FIRST EPSSEPSS score2.4 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2021-02-17
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-mxrc-pw88-9mfj

Frequently asked questions

What is CVE-2021-22173?

Memory leak in USB HID dissector in Wireshark 3.4.0 to 3.4.2 allows denial of service via packet injection or crafted capture file

Is CVE-2021-22173 actively exploited?

Active exploitation of CVE-2021-22173 has not been confirmed. Its EPSS score was 2.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-22173?

CVE-2021-22173 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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