CVE-2021-3928

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

0.64% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-11-05 00:00Z4 YR AGO

Last updated

2024-08-03 17:09Z2 YR AGO

Reserved

2021-11-04

Assigning CNA

@huntrdev

Record state

PUBLISHED

Severity

High (CVSS 7.3)

CNA CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H

Weaknesses

• CWE-457Use of Uninitialized VariableVariant
• CWE-908Use of Uninitialized ResourceBase
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

454d3648ebdfbd0fe06f63b4981fb020dfcc8d921391055472bc41fb7e20f2bf

• huntr.devhttps://huntr.dev/bounties/29c3ebd2-d601-481c-bf96-76975369d0cd
• github.comhttps://github.com/vim/vim/commit/15d9890eee53afc61eb0a03b878a19cb5672f732
• lists.fedoraproject.orgFEDORA-2021-58ab85548dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PGW56Z6IN4UVM3E5RXXF4G7LGGTRBI5C/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-cfadac570ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCQWPEY2AEYBELCMJYHYWYCD3PZVD2H7/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-b0ac29efb1https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/vendor-advisory
• www.openwall.com[oss-security] 20220114 Re: 3 new CVE's in vimhttp://www.openwall.com/lists/oss-security/2022/01/15/1mailing-list
• lists.debian.org[debian-lts-announce] 20220311 [SECURITY] [DLA 2947-1] vim security updatehttps://lists.debian.org/debian-lts-announce/2022/03/msg00018.htmlmailing-list
• security.gentoo.orgGLSA-202208-32https://security.gentoo.org/glsa/202208-32vendor-advisory
• lists.debian.org[debian-lts-announce] 20221108 [SECURITY] [DLA 3182-1] vim security updatehttps://lists.debian.org/debian-lts-announce/2022/11/msg00009.htmlmailing-list