CVE-2021-39923

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

1.61% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 75.7% of scored records. A rank, not a probability.

NVD base score

7.5 (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:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. 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

2021-11-19 16:31Z4 YR AGO

Last updated

2024-08-04 02:20Z2 YR AGO

Reserved

2021-08-23

Assigning CNA

GitLab

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-834Excessive IterationClass
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

705f5f32ae02db90058c86d7924d6695902b64982afef123e01f4522e8d675a7

• gitlab.comhttps://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.jsonx_refsource_CONFIRM
• www.wireshark.orghttps://www.wireshark.org/security/wnpa-sec-2021-11.htmlx_refsource_MISC
• gitlab.comhttps://gitlab.com/wireshark/wireshark/-/issues/17684x_refsource_MISC
• www.debian.orgDSA-5019https://www.debian.org/security/2021/dsa-5019vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20211226 [SECURITY] [DLA 2849-1] wireshark security updatehttps://lists.debian.org/debian-lts-announce/2021/12/msg00015.htmlmailing-listx_refsource_MLIST