CVE-2026-100111 in Photoshop
Summary
by MITRE • 10/13/2026
Photoshop Desktop is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
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Analysis
by VulDB Data Team • 10/13/2026
The Adobe Photoshop Desktop application contains a critical memory corruption flaw classified as an out-of-bounds write vulnerability, which poses a severe risk to system integrity and confidentiality. This specific type of defect occurs when the software attempts to write data to a memory location that lies outside the boundaries of the intended buffer or allocated region. In the context of Adobe Photoshop, this error typically arises during the processing of complex image files or layered compositions where internal buffers are dynamically resized or manipulated based on file metadata and pixel data structures. When an attacker crafts a malicious file with specifically engineered dimensions, layer counts, or embedded objects that exceed expected limits, the application fails to properly validate these inputs before writing them into memory. This lack of rigorous boundary checking allows the write operation to overwrite adjacent memory locations, potentially corrupting critical control data such as function pointers, exception handlers, or return addresses on the stack or heap.
The operational impact of this vulnerability is significant because it can lead directly to arbitrary code execution within the security context of the current user. By carefully controlling the contents written beyond the buffer boundary, an attacker can manipulate program flow to execute malicious shellcode injected into the process memory space. Since Adobe Photoshop typically runs with standard user privileges rather than administrative rights, successful exploitation grants the adversary a foothold in the victim's environment at that same privilege level. This allows for further lateral movement if the user has access to sensitive network resources or if additional vulnerabilities are present within other applications running under the same account. The requirement for user interaction means that social engineering tactics remain relevant; victims must be tricked into opening specially crafted files, often disguised as legitimate image assets through phishing campaigns or compromised websites hosting malicious downloads.
From a threat intelligence perspective, this vulnerability aligns with Common Weakness Enumeration identifier CWE-787, which denotes out-of-bounds write conditions that lead to memory corruption and potential code execution. Furthermore, the exploitation technique maps closely to MITRE ATT&CK tactics involving initial access via spearphishing attachment or drive-by compromise, followed by techniques for privilege escalation if the user context allows it. The attack vector relies heavily on the victim's trust in the source of the image file, highlighting the importance of input validation and sandboxing mechanisms within creative software suites that handle untrusted external data sources extensively.
Mitigation strategies should prioritize immediate patching to the latest version of Adobe Photoshop Desktop where these memory management routines have been hardened with strict bounds checking and safe allocation practices. Organizations must enforce application control policies to restrict the execution of unsigned or unauthorized binaries, although this is less effective against legitimate software exploiting internal flaws. Users should be educated on recognizing suspicious file origins and avoiding opening image files from untrusted sources. Additionally, enabling data execution prevention and address space layout randomization at the operating system level can mitigate the likelihood of successful code execution by making it more difficult for attackers to predict memory layouts and bypass write protections. Regular vulnerability scanning and monitoring for anomalous process behavior in systems running creative software suites are also recommended to detect potential exploitation attempts early.