Back
CVE-2020-26421
Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via…
Medium4.2EPSS 2.5%
- Published
- Updated
- Reserved
- Assigned by
- GitLab
Description
Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitLabCNA (assigner) | 3.1 | Medium4.2 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L |
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.2.
Weakness
- Buffer over-read in Wireshark
- CWE-125 (opens in a new tab)All about CWE-125 and its CVEs
Affected products
The Wireshark Foundation · Wireshark
- affected 3.4.0
- affected >= 3.2.0 to < 3.2.9
References (8)
- https://www.wireshark.org/security/wnpa-sec-2020-17.html (opens in a new tab)x_refsource_MISCx_transferred
- https://gitlab.com/wireshark/wireshark/-/issues/16958 (opens in a new tab)x_refsource_MISCx_transferred
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26421.json (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-202101-12 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- [debian-lts-announce] 20210206 [SECURITY] [DLA 2547-1] wireshark security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2021-f3011da665 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2021-138674557c (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://www.oracle.com/security-alerts/cpuApr2021.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-26421)Record last updated .