CVE-2025-61822: 
Adobe ColdFusion vulnerability analysis and mitigation

CVE-2025-61822 is an Improper Input Validation vulnerability (CWE-20) in Adobe ColdFusion that allows an attacker to write malicious files to arbitrary locations on the file system. Affected versions include ColdFusion 2025 Update 4 and earlier, 2023 Update 16 and earlier, and 2021 Update 22 and earlier. The vulnerability was disclosed on December 9, 2025, via Adobe Security Bulletin APSB25-105, and published to NVD on December 10, 2025. It carries a CVSS v3.1 base score of 6.2 (Medium), assigned by Adobe (Adobe Advisory).

The vulnerability stems from insufficient input validation within Adobe ColdFusion, classified as CWE-20 (Improper Input Validation). The attack vector is adjacent network (AV:A), requiring high privileges (PR:H) but no user interaction, and results in a changed scope — meaning the impact extends beyond the vulnerable component itself. An attacker positioned on the same network segment with elevated privileges can exploit this flaw to write arbitrary files to any location on the underlying file system, potentially placing web shells or malicious scripts in sensitive directories. No public technical write-ups or proof-of-concept code have been identified at this time (Adobe Advisory).

Successful exploitation allows an attacker to write malicious files to arbitrary locations on the file system, with a high integrity impact and no direct confidentiality or availability impact per the CVSS scoring. However, the ability to write arbitrary files — such as web shells or configuration overrides — could serve as a precursor to full system compromise, remote code execution, or persistent backdoor installation. The changed scope indicator suggests that exploitation could affect components or systems beyond the ColdFusion application itself (Adobe Advisory).

Adobe has released patches addressing this vulnerability in the following versions: ColdFusion 2025 Update 5 or later, ColdFusion 2023 Update 17 or later, and ColdFusion 2021 Update 23 or later. Organizations should apply the relevant update immediately via Adobe Security Bulletin APSB25-105. As interim mitigations, restrict network access to ColdFusion servers to trusted adjacent network segments, enforce strict access controls to limit high-privileged account exposure, and monitor file system activity for unexpected writes to sensitive directories (Adobe Advisory).

Sophos noted this vulnerability in their December 2025 Patch Tuesday coverage, highlighting it as part of Adobe's end-of-year security releases. The Center for Internet Security (CIS) also issued an advisory referencing multiple Adobe vulnerabilities patched in December 2025, including this one. No significant independent researcher commentary or social media discussion has been identified beyond routine vulnerability tracking (Sophos Blog, CIS Advisory).