ZDI-26-453: GIMP HDR 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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-18300.
AI Analysis
Technical Summary
CVE-2026-18300 is an integer overflow vulnerability in the HDR file parsing component of GIMP. This vulnerability allows remote attackers to execute arbitrary code by supplying specially crafted HDR files that trigger an integer overflow during buffer allocation. Exploitation requires user interaction, such as opening a malicious file. The vulnerability has a CVSS score of 7.8 and was publicly disclosed by the Zero Day Initiative on July 29, 2026. GIMP has released an update to fix this issue, as documented in the GNOME GitLab commit d3d262008299341c5b032b354021632ceadb2799.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code within the context of the GIMP process, potentially leading to full compromise of the affected system. The vulnerability affects confidentiality, integrity, and availability (C, I, A all high).
Mitigation Recommendations
GIMP has issued an official update that corrects this vulnerability. Users and administrators should apply the update promptly to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
ZDI-26-453: GIMP HDR File Parsing Integer 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-2026-18300.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18300 is an integer overflow vulnerability in the HDR file parsing component of GIMP. This vulnerability allows remote attackers to execute arbitrary code by supplying specially crafted HDR files that trigger an integer overflow during buffer allocation. Exploitation requires user interaction, such as opening a malicious file. The vulnerability has a CVSS score of 7.8 and was publicly disclosed by the Zero Day Initiative on July 29, 2026. GIMP has released an update to fix this issue, as documented in the GNOME GitLab commit d3d262008299341c5b032b354021632ceadb2799.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code within the context of the GIMP process, potentially leading to full compromise of the affected system. The vulnerability affects confidentiality, integrity, and availability (C, I, A all high).
Mitigation Recommendations
GIMP has issued an official update that corrects this vulnerability. Users and administrators should apply the update promptly to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-453/","fetched":true,"fetchedAt":"2026-07-30T15:56:58.875Z","wordCount":208}
- Exploit Sophistication
- 7
- Weaponization Potential
- 6
- Stealth Capability
- 5
- Ai Analysis Type
- exploit-specialized
Threat ID: 6a6b74c89c2644c7f84cc4d2
Added to database: 07/30/2026, 15:59:04 UTC
Last enriched: 07/30/2026, 16:11:33 UTC
Last updated: 07/31/2026, 01:45:27 UTC
Views: 11
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