CVE-2020-26420
Memory leak in RTPS protocol dissector in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
02 Description
Memory leak in RTPS protocol dissector in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.74% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.6% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-12-11 17:20Z5 YR AGO
- Last updated
- 2024-08-04 15:56Z2 YR AGO
- Reserved
- 2020-10-01
- Assigning CNA
- GitLab
- Record state
- PUBLISHED
- Severity
- Low (CVSS 3.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-401Missing Release of Memory after Effective LifetimeVariant
- Data version
- 5.1
- Document digest
- e2fe0435db713198f4ad585ccb8a8f64b8e685e561242c67d780b2356f8570d9
05 Affected products
06 References
- www.wireshark.orghttps://www.wireshark.org/security/wnpa-sec-2020-18.html
- gitlab.comhttps://gitlab.com/wireshark/wireshark/-/issues/16994
- gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26420.json
- security.gentoo.orgGLSA-202101-12https://security.gentoo.org/glsa/202101-12
- lists.fedoraproject.orgFEDORA-2021-f3011da665https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YHWDZPWQJMLK64VFDWJC5SEGPNH6Y72Z/
- lists.fedoraproject.orgFEDORA-2021-138674557chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M75HYXU36SP6GHIDPHNZGJKEO6TX4C4Y/
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuApr2021.html
07 Fixed in
Arch Linux
- wireshark-cli Fixed in 3.4.1-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- wireshark Fixed in 3.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- wireshark Fixed in 3.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- wireshark Fixed in 3.4.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- wireshark No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.