CVE-2026-36365

Local code execution via unsafe command resolution

Published May 4, 2026 · Updated May 4, 2026

OS command injection in Lymphatus Caesium Image Compressor through commit 02da2c6 allows local users to execute arbitrary code after compression. The shutdownMachine and putMachineToSleep functions pass fixed command names to system(), which invokes a shell and resolves executables from the process environment. A local user who controls that environment can place a malicious executable earlier in PATH; choosing shutdown or sleep after compression runs it with the application's privileges.

CVSS severity7.8
High
EPSS probability0.14%
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 Lymphatus Caesium Image Compressor through commit 02da2c6 allows local users to execute arbitrary code after compression. The shutdownMachine and putMachineToSleep functions pass fixed command names to system(), which invokes a shell and resolves executables from the process environment. A local user who controls that environment can place a malicious executable earlier in PATH; choosing shutdown or sleep after compression runs it with the application's privileges.

The record

CVE
CVE-2026-36365
Published
May 4, 2026
Updated
May 4, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, CWE-94, T1574.007
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 4, 2026CVE publishedPublication date reported by the CVE source.
  2. May 4, 2026Record 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-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1574.007Path Interception by PATH Environment Variable

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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