CVE-2021-23239

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

1.03% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 61.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-01-12 00:00Z5 YR AGO

Last updated

2024-08-03 19:05Z2 YR AGO

Reserved

2021-01-07

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-59Improper Link Resolution Before File Access ('Link Following')Base
• CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase

Data version

5.1

Document digest

7c3c5965d1a87402a8ab1428b3601af67d624fc441e2b2450e23a2ef4af0eff8

• bugzilla.suse.comhttps://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23239
• www.sudo.wshttps://www.sudo.ws/stable.html#1.9.5
• lists.fedoraproject.orgFEDORA-2021-324479472chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-234d14bfcchttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMY4VSSBIND7VAYSN6T7XIWJRWG4GBB3/vendor-advisory
• security.gentoo.orgGLSA-202101-33https://security.gentoo.org/glsa/202101-33vendor-advisory
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210129-0010/
• lists.debian.org[debian-lts-announce] 20221107 [SECURITY] [DLA 3181-1] sudo security updatehttps://lists.debian.org/debian-lts-announce/2022/11/msg00007.htmlmailing-list