CVE-2021-4183

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

1.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 74.5% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

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

2021-12-30 00:00Z4 YR AGO

Last updated

2024-08-03 17:16Z2 YR AGO

Reserved

2021-12-27

Assigning CNA

GitLab

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

daecbb833f7fdda589ec9f63e4468ebf71499d667822c5301c205caa633a6c03

• www.wireshark.orghttps://www.wireshark.org/security/wnpa-sec-2021-19.html
• gitlab.comhttps://gitlab.com/wireshark/wireshark/-/issues/17755
• gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4183.json
• lists.fedoraproject.orgFEDORA-2022-1daf93c51dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-30411cb3c4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/vendor-advisory
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.html
• security.gentoo.orgGLSA-202210-04https://security.gentoo.org/glsa/202210-04vendor-advisory