CVE-2021-4173

HIGH
MEDIUM Priority: 0.14 BB Relevance: 41/100
Published: 2021-12-27 Modified: 2026-11-02 First seen: 2026-11-02 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

vim is vulnerable to Use After Free

Weakness Classification (1)

Affected Software (19)

VendorProductVersion
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple macos < 12.3
apple macos 10.15.7
fedoraproject fedora 34
fedoraproject fedora 35
vim vim < 8.2.3902
vim vim/vim unspecified < 8.2

Bug Bounty Relevance

41 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

1.76%
Raw Score 0.017580
Percentile 78.1%
Date 2026-11-05

EPSS Trend

2026-11-05
0.01758
2026-11-04
0.01758
2026-11-03
0.01758
2026-11-02
0.01758

Intelligence Sources

mitre ref →
nvd ref →