ZDI-26-456: GIMP TIF File Parsing Stack-based Buffer 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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-18303.
AI Analysis
Technical Summary
CVE-2026-18303 is a stack-based buffer overflow vulnerability in GIMP's TIF file parser. The vulnerability is due to insufficient validation of the length of user-supplied data before copying it to a stack buffer, which can lead to arbitrary code execution in the context of the current process. Exploitation requires user interaction, such as opening a crafted TIF file or visiting a malicious page. The Zero Day Initiative assigned a CVSS score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). GIMP has released an update to address this vulnerability.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the user running GIMP. This can lead to full compromise of the affected system. The vulnerability requires user interaction but has high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
GIMP has issued an official update that corrects this vulnerability. Users and administrators should apply the update promptly to remediate the issue. No additional mitigations are indicated by the vendor advisory.
ZDI-26-456: GIMP TIF File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
Description
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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-18303.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18303 is a stack-based buffer overflow vulnerability in GIMP's TIF file parser. The vulnerability is due to insufficient validation of the length of user-supplied data before copying it to a stack buffer, which can lead to arbitrary code execution in the context of the current process. Exploitation requires user interaction, such as opening a crafted TIF file or visiting a malicious page. The Zero Day Initiative assigned a CVSS score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). GIMP has released an update to address this vulnerability.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code with the privileges of the user running GIMP. This can lead to full compromise of the affected system. The vulnerability requires user interaction but has high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
GIMP has issued an official update that corrects this vulnerability. Users and administrators should apply the update promptly to remediate the issue. No additional mitigations are indicated by the vendor advisory.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-456/","fetched":true,"fetchedAt":"2026-07-30T15:56:53.263Z","wordCount":207}
- Exploit Sophistication
- 6
- Weaponization Potential
- 7
- Stealth Capability
- 5
- Ai Analysis Type
- exploit-specialized
Threat ID: 6a6b74c89c2644c7f84cc4c9
Added to database: 07/30/2026, 15:59:04 UTC
Last enriched: 07/30/2026, 16:11:12 UTC
Last updated: 07/31/2026, 14:47:42 UTC
Views: 13
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