CVE-2020-26421

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

2.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 84.9% 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.

Published

2020-12-11 17:25Z5 YR AGO

Last updated

2024-08-04 15:56Z2 YR AGO

Reserved

2020-10-01

Assigning CNA

GitLab

Record state

PUBLISHED

Severity

Medium (CVSS 4.2)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

66b539c69891a922cd4a5f11e28478f2b25a60de96937936fe4e29de000ee883

• www.wireshark.orghttps://www.wireshark.org/security/wnpa-sec-2020-17.htmlx_refsource_MISC
• gitlab.comhttps://gitlab.com/wireshark/wireshark/-/issues/16958x_refsource_MISC
• gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26421.jsonx_refsource_CONFIRM
• security.gentoo.orgGLSA-202101-12https://security.gentoo.org/glsa/202101-12vendor-advisoryx_refsource_GENTOO
• lists.debian.org[debian-lts-announce] 20210206 [SECURITY] [DLA 2547-1] wireshark security updatehttps://lists.debian.org/debian-lts-announce/2021/02/msg00008.htmlmailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-f3011da665https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YHWDZPWQJMLK64VFDWJC5SEGPNH6Y72Z/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-138674557chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M75HYXU36SP6GHIDPHNZGJKEO6TX4C4Y/vendor-advisoryx_refsource_FEDORA
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuApr2021.htmlx_refsource_MISC