CISA Adds Critical Adobe AEM Forms Vulnerability (CVE-2025-54253) to KEV — Patch Required by November 5 2025

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added CVE-2025-54253 to its Known Exploited Vulnerabilities (KEV) catalog following confirmed active exploitation.
The flaw carries a maximum CVSS score of 10.0 and allows remote code execution (RCE) in Adobe Experience Manager (AEM) Forms.
Adobe has already released official patches for affected versions.

What Happened

• On October 15 2025, CISA added CVE-2025-54253 to the KEV list, confirming in-the-wild exploitation and urging immediate remediation.

• Adobe issued a security update for AEM Forms on JEE (v6.5.23.0 and earlier) in bulletin APSB25-82, available since August 2025.

Technical Details

• CVE-2025-54253 — a critical misconfiguration vulnerability that can lead to remote code execution.

• CVSS Score 10.0 (Critical) — the Common Vulnerability Scoring System (CVSS) is an international standard for rating vulnerability severity.
  A score of 10.0 represents maximum risk, indicating the flaw is easy to exploit and may allow full system compromise.

• Related vulnerability: CVE-2025-54254 (XML External Entity – arbitrary file read, CVSS 8.6).

• Public proof-of-concept (PoC) exploits are available, increasing the likelihood of widespread attacks.

Impact and Prioritization

Organizations running AEM Forms on JEE face high exposure.
CISA has mandated all U.S. Federal Civilian Executive Branch (FCEB) agencies to apply the patch by November 5 2025.
Enterprises in regulated sectors — finance, healthcare, energy, and government — should treat this update as top priority.

DIAMATIX Recommendations

1. Patch Immediately — apply the official Adobe update (APSB25-82).
2. Restrict Access — place AEM instances behind WAF/NGFW controls and limit administrative access via VPN or trusted IP ranges.
3. Review Logs — look for new admin accounts, suspicious requests, or unexpected processes.
4. Apply Temporary Controls — if patching is delayed, deploy WAF rules or disable exposed endpoints.
5. Validate Post-Patch — perform vulnerability scans and functional tests after the update.

DIAMATIX Expert Insight

Our approach: patch → harden → detect.

• Patch: Apply all vendor updates without delay.

• Harden: Reduce attack surface by restricting interfaces and privileges.

• Detect: Enhance monitoring with SOC/XDR to identify Indicators of Compromise (IoCs).

DIAMATIX can assist with exposure assessment, compensating controls, and continuous threat monitoring to ensure both resilience and compliance.

Trusted · Innovative · Vigilant

References

1. Adobe Security Bulletin APSB25-82 – AEM Forms Security Update
2. CISA Adds One Known Exploited Vulnerability to Catalog