CVE-2021-4173

HIGHScheduled

Published:Dec 27, 2021(4 years ago)

Modified:Nov 3, 2025

Local AccessNo Auth RequiredLow Complexity

Vulnerability Description

vim is vulnerable to Use After Free

Attack Characteristics

Local AccessLow ComplexityNo Auth NeededUser Interaction Required

🤖

AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
vim	vim	8.2.3902	-
fedoraproject	fedora	-	-
fedoraproject	fedora	-

Timeline

Published
CVE disclosed publicly
Dec 27, 20214 years ago
Last Modified
Most recent update
Nov 3, 20256 months ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

http://seclists.org/fulldisclosure/2022/Jul/14Mailing List
http://seclists.org/fulldisclosure/2022/Mar/29Mailing List
http://seclists.org/fulldisclosure/2022/May/35Mailing List

CVSS Score

v3.1

7.8/ 10.0

HIGH

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

At a Glance

Affected Products

References

vim / vim +18 more

http://www.openwall.com/lists/oss-security/2022/01/15/1Mailing List

https://github.com/vim/vim/commit/9c23f9bb5fe435b28245ba8ac65aa0ca6b90...Patch

https://huntr.dev/bounties/a1b236b9-89fb-4ccf-9689-ba11b471e766Exploit

https://lists.fedoraproject.org/archives/list/package-announce%40lists...

https://security.gentoo.org/glsa/202208-32Third Party Advisory

https://support.apple.com/kb/HT213183Release Notes

https://support.apple.com/kb/HT213256Third Party Advisory

https://support.apple.com/kb/HT213343Third Party Advisory

http://seclists.org/fulldisclosure/2022/Jul/14Mailing List

http://seclists.org/fulldisclosure/2022/Mar/29Mailing List

http://seclists.org/fulldisclosure/2022/May/35Mailing List

http://www.openwall.com/lists/oss-security/2022/01/15/1Mailing List

https://github.com/vim/vim/commit/9c23f9bb5fe435b28245ba8ac65aa0ca6b90...Patch

https://huntr.dev/bounties/a1b236b9-89fb-4ccf-9689-ba11b471e766Exploit

https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists...

https://security.gentoo.org/glsa/202208-32Third Party Advisory

https://support.apple.com/kb/HT213183Release Notes

https://support.apple.com/kb/HT213256Third Party Advisory

https://support.apple.com/kb/HT213343Third Party Advisory

CVSS v3 Vector

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

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

Impact

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Impact Analysis

ConfidentialityHigh

NoneLowHigh

IntegrityHigh

NoneLowHigh

AvailabilityHigh

NoneLowHigh

CVE-2021-4173

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description