CVE-2020-26419
Memory leak in the dissection engine in Wireshark 3.4.0 allows denial of service via packet injection or crafted capture file.
02 Description
Memory leak in the dissection engine in Wireshark 3.4.0 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
- 2.93% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 86.6% 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 17:17Z5 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
- b0f49fa97c4ff72694df87bd1a2299aee1d945e2b9363efeb6b239368ff18a7c
05 Affected products
06 References
- www.wireshark.orghttps://www.wireshark.org/security/wnpa-sec-2020-19.html
- gitlab.comhttps://gitlab.com/wireshark/wireshark/-/issues/17032
- gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26419.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.
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.