CVE-2022-2207

Memory corruption via unchecked backspace cursor position

Published Jun 27, 2022 · Updated Aug 3, 2024

Heap buffer overflow in Vim before 8.2.5162 allows context-dependent attackers to crash the editor through crafted Replace-mode input. The ins_bs function reads the byte before the cursor while processing Backspace in Replace mode without first ensuring that the cursor column is greater than zero. Exploitation requires user interaction with the triggering edit state; the bounded consequences are memory corruption, process termination, and code execution.

CVSS severity7.8
High
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Vim before 8.2.5162 allows context-dependent attackers to crash the editor through crafted Replace-mode input. The ins_bs function reads the byte before the cursor while processing Backspace in Replace mode without first ensuring that the cursor column is greater than zero. Exploitation requires user interaction with the triggering edit state; the bounded consequences are memory corruption, process termination, and code execution.

The record

CVE
CVE-2022-2207
Published
Jun 27, 2022
Updated
Aug 3, 2024
Vendor
Vim
Product
Vim
Classifications
CWE-122, T1204
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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

7.8Protect AICVSS:3.0/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1204User Execution

Public exploit references

No public exploit references are available in this record.

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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