CVE-2026-48386: 
Adobe ColdFusion vulnerability analysis and mitigation

CVE-2026-48386 is a Use of a Broken or Risky Cryptographic Algorithm vulnerability (CWE-327) in Adobe ColdFusion that can lead to disclosure of sensitive memory contents. An unauthenticated remote attacker can exploit this flaw without any user interaction to disclose sensitive information. Affected versions include ColdFusion 2023 (up to and including update 22 / version 2023.0.22) and ColdFusion 2025 (up to and including update 11 / version 2025.0.11). Adobe disclosed and patched this vulnerability on August 11, 2026. It carries a CVSS v3.1 base score of 7.5 (High) (Adobe Advisory, Feedly).

The vulnerability is rooted in ColdFusion's use of a cryptographic algorithm that is considered broken or insufficiently secure (CWE-327), which enables an attacker to exploit weaknesses in the algorithm to access sensitive memory contents. The attack vector is network-based, requires no privileges, no user interaction, and has low attack complexity, making it automatable. Specific technical details about which cryptographic primitive is affected or the precise exploitation mechanism have not been publicly disclosed beyond the vendor advisory. Associated attack patterns include cryptanalysis (CAPEC-97) and encryption brute forcing (CAPEC-20) (Adobe Advisory, Feedly).

Successful exploitation results in a high confidentiality impact — an unauthenticated remote attacker can disclose sensitive information stored in memory, with no impact to integrity or availability. The nature of the exposed data (e.g., cryptographic keys, session tokens, credentials, or application secrets) is not fully specified in public disclosures, but memory disclosure vulnerabilities in application servers can facilitate further attacks such as session hijacking or credential theft. The vulnerability is exploitable without user interaction, broadening the potential attack surface for internet-facing ColdFusion deployments (Adobe Advisory, CIS Advisory).

As of the time of disclosure, there is no public proof-of-concept exploit and no evidence of in-the-wild exploitation (Feedly). The vulnerability is classified as automatable by NVD SSVC assessment, meaning exploitation can be scripted at scale. The EPSS score is approximately 0.696%, indicating a relatively low (but non-negligible) probability of exploitation in the near term. CVE-2026-48386 has not been added to the CISA Known Exploited Vulnerabilities (KEV) catalog as of the disclosure date. No threat actor attribution has been reported (Adobe Advisory).

Adobe has released patched versions addressing this vulnerability: ColdFusion 2025 Update 12 (version 2025.0.12) and ColdFusion 2023 Update 23 (version 2023.0.23). Organizations should upgrade to these versions immediately. As interim mitigations, administrators should implement network-level controls to restrict access to ColdFusion servers to trusted IP ranges, review and monitor access logs for anomalous activity, and consult Adobe's lockdown guides for hardening ColdFusion deployments (Adobe Advisory, CIS Advisory).

The Center for Internet Security (CIS) issued an advisory noting that multiple vulnerabilities in Adobe products, including CVE-2026-48386, could allow for arbitrary code execution and information disclosure, recommending prompt patching (CIS Advisory). Security news outlets including CyberSecurityNews and GBHackers covered the broader August 2026 Adobe ColdFusion patch release, highlighting the risk posed by the batch of vulnerabilities (CyberSecurityNews, GBHackers). Tenable has also published plugin coverage for this CVE as part of its vulnerability scanning pipeline (Tenable).