Use of Uninitialized Variable in vim/vim

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Summary

CVECVE-2021-3928
StatePUBLISHED
Assigner@huntrdev
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-11-05 15:15:08 UTC
Updated2026-10-08 22:17:11 UTC
Descriptionvim is vulnerable to Use of Uninitialized Variable

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

EPSS: 0.006350000 probability, percentile 0.489680000 (date 2026-10-11)

Problem Types: CWE-457 | CWE-908 | CWE-457 CWE-457 Use of Uninitialized Variable

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.0[email protected]Secondary7.3HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
3.0CNADECLARED7.3HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
2.0[email protected]Primary4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 34 All All All
Operating System Fedoraproject Fedora 35 All All All
Application Vim Vim All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Vim Vim/vim affected unspecified 8.2.3582 custom Not specified

References

ReferenceSourceLinkTags
[SECURITY] [DLA 3182-1] vim security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
[SECURITY] [DLA 2947-1] vim security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mitigation, Third Party Advisory
patch 8.2.3582: reading uninitialized memory when giving spell sugges… · vim/vim@15d9890 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
huntr: Stack-based Buffer Overflow Vim script Vulnerability in vim af854a3a-2127-422b-91ae-364da2661108 huntr.dev Exploit, Patch, Third Party Advisory
[SECURITY] Fedora 33 Update: vim-8.2.3582-1.fc33 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
oss-security - Re: 3 new CVE's in vim af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Vim, gVim: Multiple Vulnerabilities (GLSA 202208-32) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
[SECURITY] Fedora 35 Update: vim-8.2.3582-1.fc35 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 34 Update: vim-8.2.3755-1.fc34 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
FEDORA:FEDORA-2021-58ab85548d MITRE lists.fedoraproject.org
[SECURITY] Fedora 34 Update: vim-8.2.3755-1.fc34 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 33 Update: vim-8.2.3582-1.fc33 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 179126 Debian Security Update for vim (DLA 2947-1)
  • 181198 Debian Security Update for vim (DLA 3182-1)
  • 181990 Debian Security Update for vim (CVE-2021-3928)
  • 198571 Ubuntu Security Notification for Vim Vulnerabilities (USN-5147-1)
  • 282065 Fedora Security Update for vim (FEDORA-2021-cfadac570a)
  • 282117 Fedora Security Update for vim (FEDORA-2021-b0ac29efb1)
  • 282161 Fedora Security Update for vim (FEDORA-2021-58ab85548d)
  • 296061 Oracle Solaris 11.4 Support Repository Update (SRU) 42.113.1 Missing (CPUJAN2022)
  • 353117 Amazon Linux Security Advisory for vim : ALAS-2022-1557
  • 353120 Amazon Linux Security Advisory for vim : ALAS2-2022-1743
  • 354406 Amazon Linux Security Advisory for vim : ALAS2022-2021-005
  • 354497 Amazon Linux Security Advisory for vim : ALAS2022-2022-155
  • 354585 Amazon Linux Security Advisory for vim : ALAS-2022-155
  • 355135 Amazon Linux Security Advisory for vim : ALAS2023-2023-098
  • 500728 Alpine Linux Security Update for vim
  • 504502 Alpine Linux Security Update for vim
  • 671206 EulerOS Security Update for vim (EulerOS-SA-2022-1040)
  • 671215 EulerOS Security Update for vim (EulerOS-SA-2022-1020)
  • 671261 EulerOS Security Update for vim (EulerOS-SA-2022-1193)
  • 671289 EulerOS Security Update for vim (EulerOS-SA-2022-1248)
  • 671314 EulerOS Security Update for vim (EulerOS-SA-2022-1260)
  • 671346 EulerOS Security Update for vim (EulerOS-SA-2022-1283)
  • 710607 Gentoo Linux Vim, gVim Multiple Vulnerabilities (GLSA 202208-32)
  • 751791 SUSE Enterprise Linux Security Update for vim (SUSE-SU-2022:0736-1)
  • 751809 OpenSUSE Security Update for vim (openSUSE-SU-2022:0736-1)
  • 752246 SUSE Enterprise Linux Security Update for vim (SUSE-SU-2022:2102-1)
  • 752947 SUSE Enterprise Linux Security Update for vim (SUSE-SU-2022:4282-1)
  • 753066 SUSE Enterprise Linux Security Update for vim (SUSE-SU-2022:4619-1)
  • 900362 Common Base Linux Mariner (CBL-Mariner) Security Update for vim (6165)

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