CVE-2021-28605 is a memory corruption vulnerability classified as an out-of-bounds write (CWE-787) affecting Adobe After Effects version 18.2 and earlier. This vulnerability arises when the software parses a specially crafted file, leading to memory corruption that can be exploited by an attacker to execute arbitrary code within the context of the current user. The attack vector requires user interaction, specifically the victim opening a maliciously crafted After Effects project or file. No authentication is required for exploitation, but the victim must be convinced or tricked into opening the file. The vulnerability impacts the integrity and confidentiality of the system by allowing code execution, potentially enabling an attacker to manipulate files, exfiltrate data, or install malware. However, the scope of impact is limited to the privileges of the user running After Effects. There are no known exploits in the wild, and Adobe has not provided a patch link in the provided data, indicating that remediation may require updating to a fixed version once available or applying recommended mitigations. The vulnerability was publicly disclosed in August 2021 and is enriched by CISA, highlighting its relevance to cybersecurity stakeholders.

For European organizations, especially those in creative industries such as media production, advertising, and digital content creation, this vulnerability poses a tangible risk. Adobe After Effects is widely used across Europe in these sectors, and successful exploitation could lead to compromise of sensitive project files, intellectual property theft, or lateral movement within corporate networks if the compromised user has network access. The requirement for user interaction means phishing or social engineering campaigns could be effective vectors. Additionally, compromised systems could be used as footholds for further attacks, including ransomware or espionage. The impact on confidentiality and integrity is significant, though availability impact is limited unless the exploit is weaponized to cause denial of service. Organizations with less mature security awareness or lacking robust endpoint protection may be more vulnerable. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, as attackers may develop exploits over time.

European organizations should implement targeted mitigations beyond generic advice. First, ensure that all Adobe After Effects installations are updated to the latest version once Adobe releases a patch addressing CVE-2021-28605. Until then, restrict the opening of After Effects project files from untrusted or unknown sources. Implement strict email filtering and attachment scanning to reduce the risk of malicious files reaching end users. Conduct user awareness training focused on recognizing suspicious files and social engineering tactics related to creative software. Employ endpoint detection and response (EDR) solutions capable of detecting anomalous process behavior associated with exploitation attempts. Network segmentation should be used to limit the ability of a compromised user account to access critical systems. Additionally, consider application whitelisting or sandboxing for Adobe After Effects to contain potential exploits. Regularly back up critical project data and verify the integrity of backups to enable recovery in case of compromise. Finally, monitor threat intelligence feeds for updates on exploit development or active campaigns targeting this vulnerability.