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TI-2021-02871 Aliases CVE-2021-3974GHSA-v748-hjwp-h5jj

Use After Free in vim/vim

Priority LOW 39CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 5 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

vim is vulnerable to Use After Free

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01363 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial vim/vim (vim): 8.2.3612Red Hat: 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
vimvim/vimbefore 8.2.36128.2.3612Patch availableCNA
  • vim/vim Vendorvim Affected before 8.2.3612 Fixed in 8.2.3612 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*before 8.2.3612Vulnerablevim
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:* Versions before 8.2.3612 Vulnerable ·vim
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA vim/vim (vim) Fixed in 8.2.3612

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    vim/vim — FEDORA-2021-5cd9df120e

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-02865 Heap-based Buffer Overflow in vim/vimPriority MEDIUM 41
    • TI-2021-02870 Heap-based Buffer Overflow in vim/vimPriority MEDIUM 40
    Show all 3 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)Affected—
Not affected: 1 product
  • Red Hat Advanced Cluster Management for Kubernetes 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3974
  2. 2026-10-03 Alias added: GHSA-v748-hjwp-h5jj
  3. 2026-10-08 CISA SSVC decision points changed
  4. 2026-11-07 Affected versions changed · Red Hat

References

Exploit 1

Patch 1

Advisory 6

  • TI-2022-03248 Heap-based Buffer Overflow in vim/vim CVSS 3.1CRITICAL 9.8
  • TI-2024-15103 Vim before 9.0.2142 has a stack-based buffer overflow because did_set_langmap in map.c… CVSS 3.1HIGH 7.8
  • TI-2023-05093 Use After Free in vim/vim CVSS 3.1HIGH 7.8
  • TI-2023-04407 Heap-based Buffer Overflow in vim/vim CVSS 3.1HIGH 7.8
  • TI-2023-04379 Heap-based Buffer Overflow in vim/vim CVSS 3.1HIGH 7.8
  • TI-2023-04378 Use After Free in vim/vim CVSS 3.1HIGH 7.8
See all 258 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences