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. The vulnerability occurs due to insufficient validation of user-supplied data, which can cause an integer overflow before buffer allocation. This flaw enables remote attackers to execute arbitrary code within the context of the GIMP process. Exploitation requires user interaction, such as opening a crafted malicious HDR file. The vulnerability has a CVSS score of 7.8, indicating high severity. GIMP has released a patch to fix this issue, as referenced in the GNOME GitLab commit d3d262008299341c5b032b354021632ceadb2799.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code on affected GIMP installations, potentially leading to full compromise of the application process. The vulnerability impacts confidentiality, integrity, and availability (all rated high). Exploitation requires user interaction, limiting automatic exploitation vectors.
Mitigation Recommendations
GIMP has issued an official update that corrects this vulnerability. Users and administrators should apply the provided patch immediately to mitigate the risk. No additional mitigation steps are indicated beyond applying the official fix.
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. The vulnerability occurs due to insufficient validation of user-supplied data, which can cause an integer overflow before buffer allocation. This flaw enables remote attackers to execute arbitrary code within the context of the GIMP process. Exploitation requires user interaction, such as opening a crafted malicious HDR file. The vulnerability has a CVSS score of 7.8, indicating high severity. GIMP has released a patch to fix this issue, as referenced in the GNOME GitLab commit d3d262008299341c5b032b354021632ceadb2799.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code on affected GIMP installations, potentially leading to full compromise of the application process. The vulnerability impacts confidentiality, integrity, and availability (all rated high). Exploitation requires user interaction, limiting automatic exploitation vectors.
Mitigation Recommendations
GIMP has issued an official update that corrects this vulnerability. Users and administrators should apply the provided patch immediately to mitigate the risk. No additional mitigation steps are indicated beyond applying the official fix.
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
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a6b74c89c2644c7f84cc4d2
Added to database: 07/30/2026, 15:59:04 UTC
Last enriched: 08/15/2026, 05:18:50 UTC
Last updated: 09/14/2026, 22:01:32 UTC
Views: 153
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