CVE-2022-2125

Editor crash via unterminated Lisp indentation scan

Published Jun 19, 2022 · Updated Aug 3, 2024

Heap buffer overflow in Vim before 8.2.5122 allows attackers to crash the editor through a crafted Lisp file opened by a user. The get_lisp_indent function scans a quoted line past its terminating NUL byte instead of stopping before dereferencing the next character. The flaw is reached only when attacker-controlled content is opened or reformatted with Lisp mode and automatic indentation enabled; the grounded consequence is an editor crash.

CVSS severity7.8
High
EPSS probability1.64%
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 8.2.5122 allows attackers to crash the editor through a crafted Lisp file opened by a user. The get_lisp_indent function scans a quoted line past its terminating NUL byte instead of stopping before dereferencing the next character. The flaw is reached only when attacker-controlled content is opened or reformatted with Lisp mode and automatic indentation enabled; the grounded consequence is an editor crash.

The record

CVE
CVE-2022-2125
Published
Jun 19, 2022
Updated
Aug 3, 2024
Vendor
Vim
Product
Vim
Classifications
CWE-787, CWE-122, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 19, 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

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8huntr.devCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1204.002User Execution Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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