CVE-2022-0361Public exploit

Denial of service via Visual copy bounds error

Published Jan 26, 2022 · Updated Nov 3, 2025

Heap-based buffer overflow in Vim before 8.2 allows local users to crash the editor via crafted Visual-mode line-copy operations. The ex_copy function in src/ex_cmds.c copied lines without correcting the Visual position, leaving it beyond a line and enabling an illegal memory access during subsequent editor processing. A local user must open or edit a crafted buffer and perform the Visual copy sequence; published evidence establishes process crash denial of service, not code execution.

CVSS severity7.8
High
EPSS probability1.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Vim before 8.2 allows local users to crash the editor via crafted Visual-mode line-copy operations. The ex_copy function in src/ex_cmds.c copied lines without correcting the Visual position, leaving it beyond a line and enabling an illegal memory access during subsequent editor processing. A local user must open or edit a crafted buffer and perform the Visual copy sequence; published evidence establishes process crash denial of service, not code execution.

The record

CVE
CVE-2022-0361
Published
Jan 26, 2022
Updated
Nov 3, 2025
Vendor
Vim
Product
Vim
Classifications
CWE-787, CWE-122, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <8.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Vim · Vimversion=unspecified <8.2

Published CVSS scores

8.4huntr.devCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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