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CVE-2026-48282 – Path Traversal leading to RCE – Adobe ColdFusion 2025 Update 9 / 2023 Update 20 …

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Summary

CVE-2026-48282 is a critical Path Traversal (CWE-22: Improper Limitation of a Pathname to a Restricted Directory) vulnerability in Adobe ColdFusion, affecting versions 2025 Update 9 and 2023 Update 20 and earlier. It allows unauthenticated, remote attackers to achieve arbitrary code execution in the context of the current user, with no user interaction required. Adobe assigned a maximum CVSS 3.1 base score of 10.0 (Critical) and addressed this flaw in security bulletin APSB26-68, published June 30, 2026.

Technical details

  • Root cause: Improper limitation of a pathname to a restricted directory (path traversal, CWE-22), allowing an attacker to escape the intended directory boundary within the ColdFusion server.
  • Trigger conditions: No authentication is required; the vulnerability is exploitable by any unauthenticated network-accessible attacker. No special configuration or prior access is needed.
  • Attack vector: Network-reachable; exploitable remotely over the internet without any user interaction.
  • Impact: Successful exploitation results in arbitrary code execution in the context of the user running the ColdFusion process, with complete impact to confidentiality, integrity, and availability. The CVSS Scope metric is Changed (S:C), indicating the vulnerability can impact resources beyond the vulnerable ColdFusion component itself.
  • Exploitation status: No known public exploits or active exploitation in the wild were confirmed at the time of disclosure. This vulnerability was reported to Adobe via responsible disclosure.

Affected software

  • Adobe ColdFusion 2025 – Update 9 and all earlier versions
  • Adobe ColdFusion 2023 – Update 20 and all earlier versions

Severity

  • CVSS v3.1 Base Score: 10.0 (Critical)
  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate – Apply vendor patches:
    • Upgrade ColdFusion 2025 to Update 10 or later.
    • Upgrade ColdFusion 2023 to Update 21 or later.
  • Additional hardening steps recommended by Adobe:
    • For JEE deployments, apply the required JVM serialization filter configuration as documented in the Adobe ColdFusion lockdown guides.
    • Update the MySQL JDBC connector to the latest version.
    • Upgrade JDK/JRE to the current LTS release.
  • If immediate patching is not feasible: Restrict external network access to ColdFusion administration interfaces and apply perimeter controls (e.g., WAF rules, IP allowlisting) to limit exposure to trusted sources only until a patch can be applied.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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1

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