CVE-2021-3875

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

1.54% 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

2021-10-15 13:40Z5 YR AGO

Last updated

2024-08-03 17:09Z2 YR AGO

Reserved

2021-10-09

Assigning CNA

@huntrdev

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant
• CWE-787Out-of-bounds WriteBase
• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

b7a0447249b39e2bbbacfebd58e33dab4f40145753dfb9c87989bcef5778d6ff

• huntr.devhttps://huntr.dev/bounties/5cdbc168-6ba1-4bc2-ba6c-28be12166a53x_refsource_CONFIRM
• github.comhttps://github.com/vim/vim/commit/35a319b77f897744eec1155b736e9372c9c5575fx_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-84f4cf3244https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-6988830606https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K4JJBIH3OQSZRVTWKCJCDLGMFGQ5DOH/vendor-advisoryx_refsource_FEDORA
• www.openwall.com[oss-security] 20220114 Re: 3 new CVE's in vimhttp://www.openwall.com/lists/oss-security/2022/01/15/1mailing-listx_refsource_MLIST
• security.gentoo.orgGLSA-202208-32https://security.gentoo.org/glsa/202208-32vendor-advisoryx_refsource_GENTOO