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Vulnerability · Published Apr 23, 2021 · Assigned by GitLab

CVE-2021-22207

Medium 5.5

In plain English

A medium-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 2.0% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)2.0%top 18.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Excessive memory consumption in MS-WSP dissector in Wireshark 3.4.0 to 3.4.4 and 3.2.0 to 3.2.12 allows denial of service via packet injection or crafted capture file

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20wireshark3.4.5-r0ALPINE-CVE-2021-22207
Alpine:v3.21wireshark3.4.5-r0ALPINE-CVE-2021-22207
Alpine:v3.22wireshark3.4.5-r0ALPINE-CVE-2021-22207
Alpine:v3.23wireshark3.4.5-r0ALPINE-CVE-2021-22207
Alpine:v3.24wireshark3.4.5-r0ALPINE-CVE-2021-22207
Debian:12wireshark3.4.7-1DEBIAN-CVE-2021-22207
Debian:13wireshark3.4.7-1DEBIAN-CVE-2021-22207
Debian:14wireshark3.4.7-1DEBIAN-CVE-2021-22207
Ubuntu:24.04:LTSwiresharkno fix listedUBUNTU-CVE-2021-22207
Ubuntu:25.10wiresharkno fix listedUBUNTU-CVE-2021-22207
Ubuntu:26.04:LTSwiresharkno fix listedUBUNTU-CVE-2021-22207
Ubuntu:26.10wiresharkno fix listedUBUNTU-CVE-2021-22207

Affected products (as reported)

VendorProductVersions
The Wireshark Foundation Wireshark >=3.4.0, <3.4.5>=3.2.0, <3.2.13

References