CVE-2025-27364Public exploitNetwork attack vector

Unauthenticated code execution via unsafe linker flags

Published Feb 24, 2025 · Updated Feb 24, 2025

Command injection in MITRE Caldera 4.2.0 and earlier and 5.0.0 allows remote attackers to execute code through an agent download request. The unauthenticated dynamic-compilation handler passes request-controlled linker flags into Go compilation, permitting gcc -extldflags to invoke subcommands. Exploitation requires Go, Python, and gcc on the server and runs commands with the Caldera server process's privileges.

CVSS severity10.0
Critical
EPSS probability25.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in MITRE Caldera 4.2.0 and earlier and 5.0.0 allows remote attackers to execute code through an agent download request. The unauthenticated dynamic-compilation handler passes request-controlled linker flags into Go compilation, permitting gcc -extldflags to invoke subcommands. Exploitation requires Go, Python, and gcc on the server and runs commands with the Caldera server process's privileges.

The record

CVE
CVE-2025-27364
Published
Feb 24, 2025
Updated
Feb 24, 2025
Vendor
MITRE
Product
MITRE Caldera
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 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=0 <=4.2.0
  2. Affected versionversion=5.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MITRE · MITRE Calderaversion=0 <=4.2.0; version=5.0.0

Published CVSS scores

10.0MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application

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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