Vulnerability · Published Dec 21, 2020 · Assigned by GitLab
CVE-2020-26422
Low 3.7
In plain English
A low-severity security flaw in Wireshark from The Wireshark Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.7% (higher than 92% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)4.7%top 8.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Buffer overflow in QUIC dissector in Wireshark 3.4.0 to 3.4.1 allows denial of service via packet injection or crafted capture file
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | wireshark | 3.4.2-r0 | ALPINE-CVE-2020-26422 |
| Alpine:v3.21 | wireshark | 3.4.2-r0 | ALPINE-CVE-2020-26422 |
| Alpine:v3.22 | wireshark | 3.4.2-r0 | ALPINE-CVE-2020-26422 |
| Alpine:v3.23 | wireshark | 3.4.2-r0 | ALPINE-CVE-2020-26422 |
| Alpine:v3.24 | wireshark | 3.4.2-r0 | ALPINE-CVE-2020-26422 |
| Ubuntu:24.04:LTS | wireshark | no fix listed | UBUNTU-CVE-2020-26422 |
| Ubuntu:25.10 | wireshark | no fix listed | UBUNTU-CVE-2020-26422 |
| Ubuntu:26.04:LTS | wireshark | no fix listed | UBUNTU-CVE-2020-26422 |
| Ubuntu:26.10 | wireshark | no fix listed | UBUNTU-CVE-2020-26422 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Wireshark Foundation | Wireshark | >=3.4.0, <3.4.2 |
References
- https://www.wireshark.org/security/wnpa-sec-2020-20.html x_refsource_MISC
- https://gitlab.com/wireshark/wireshark/-/issues/17073 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26422.json x_refsource_CONFIRM
- GLSA-202101-12 vendor-advisory, x_refsource_GENTOO
- https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC