CVE-2026-59087 in GIMP
Summary
by MITRE • 08/10/2026
A flaw was found in the GIMP image manipulation program, specifically within its Seattle Filmworks file loader. A remote attacker could exploit this vulnerability by tricking a user into opening a specially crafted Seattle Filmworks file. This could lead to a heap overflow, allowing the attacker to write several kilobytes of controlled data beyond the intended memory buffer. Such an overflow can result in memory corruption, potentially leading to arbitrary code execution or a denial of service.
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Analysis
by VulDB Data Team • 08/10/2026
The vulnerability resides within the GIMP image manipulation program's Seattle Filmworks file loader, representing a critical security flaw that can be exploited remotely through social engineering tactics. This specific implementation weakness affects the handling of malformed Seattle Filmworks files, which are used for storing animation sequences in the film and video production industry. The vulnerability operates at the memory management level where insufficient bounds checking occurs during file parsing operations, creating an exploitable condition that directly impacts the application's stability and security posture.
The technical exploitation mechanism involves a heap overflow condition that occurs when the Seattle Filmworks loader processes specially crafted input data. This overflow allows attackers to write several kilobytes of controlled data beyond the intended memory buffer boundaries, effectively corrupting adjacent memory regions. The vulnerability stems from improper validation of file header structures and data length specifications within the parser implementation, creating a direct pathway for memory corruption that can be leveraged by malicious actors.
From an operational impact perspective, this vulnerability presents significant risks to users who may encounter maliciously crafted Seattle Filmworks files in email attachments, download repositories, or collaborative environments. The potential consequences include complete system compromise through arbitrary code execution, where attackers could gain full control over affected systems, or more commonly a denial of service condition that renders the application unusable. The heap overflow nature means that memory corruption can occur in unpredictable patterns, making exploitation both reliable and difficult to detect.
The vulnerability maps directly to CWE-121, Heap-based Buffer Overflow, and aligns with ATT&CK technique T1203, Exploitation for Client Execution, within the adversary tactics framework. This classification indicates that the attack surface involves client-side exploitation where users are tricked into opening malicious files rather than direct network attacks. Mitigation strategies should include immediate patch deployment from GIMP maintainers, implementation of file type validation controls, and user education about avoiding untrusted file attachments. Additionally, security researchers recommend implementing memory safety mechanisms such as stack canaries, address space layout randomization, and enhanced input sanitization to reduce the exploitability of similar buffer overflow conditions in future implementations.
The broader implications extend beyond individual system compromise to include potential supply chain risks where compromised GIMP installations could serve as entry points for more extensive network infiltration campaigns. Organizations utilizing GIMP in professional environments should prioritize immediate remediation efforts and implement automated file scanning mechanisms to detect potentially malicious Seattle Filmworks files before they can be processed by the vulnerable application.