CVE-2022-48624

Local command execution via unquoted LESSCLOSE filenames

Published Feb 19, 2024 · Updated Mar 27, 2025

OS command injection in less before 606 allows local users to execute commands through crafted filenames passed to LESSCLOSE. The close_altfile function inserts filename and alternate-filename values into the configured LESSCLOSE shell command without applying shell_quote. Exploitation requires LESSCLOSE to be configured and a filename to be attacker-controlled; injected commands run with the privileges of the less process.

CVSS severity7.8
High
EPSS probability1.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in less before 606 allows local users to execute commands through crafted filenames passed to LESSCLOSE. The close_altfile function inserts filename and alternate-filename values into the configured LESSCLOSE shell command without applying shell_quote. Exploitation requires LESSCLOSE to be configured and a filename to be attacker-controlled; injected commands run with the privileges of the less process.

The record

CVE
CVE-2022-48624
Published
Feb 19, 2024
Updated
Mar 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

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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