CVE-2026-18306: GIMP SGI File Parsing Integer Overflow Remote Code Execution Vulnerability
GIMP SGI File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SGI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29396.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Mitigate exploit attempts by preventing users from opening untrusted SGI/GIMP files and avoiding visiting untrusted/malicious pages (user interaction is required to exploit).
- Compensating control
Detect and block exploitation attempts by filtering inbound/outbound access to the sources of malicious content used for social engineering (since the attacker relies on the victim opening a malicious file or visiting a malicious page).
- Compensating control
Use the advisory reference ZDI-CAN-29396 to find and apply the specific vendor patch for the GIMP SGI file parsing integer overflow RCE vulnerability.
Event History
Frequently Asked Questions
Who is exposed to this issue?
Users of affected GIMP installations are exposed when they visit a malicious page or open a malicious SGI file. Exploitation executes code in the context of the current GIMP process.
What must an attacker do to exploit the vulnerability?
The attacker must induce the target to process attacker-controlled SGI content, either through a malicious file or a malicious page. No privileges are required before exploitation, but user interaction is required.
What can be done while patching is not immediately possible?
Avoid opening untrusted SGI files and avoid visiting untrusted pages that may cause GIMP to process SGI content. Treat SGI files received through email, downloads, or other untrusted sources as potentially malicious.