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Vulnerability record · CVE-2025-10921 · published 29 October 2025

CVE-2025-10921: Gimp heap-based buffer overflow vulnerability

Gimp · Gimp

GIMP HDR File Parsing Heap-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 specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27803.

7.8 CVSS 3.0 High EPSS 0.54% · top 57.1% CWE-122 · Heap-based buffer overflowCWE-787 · Out-of-bounds write
7.8CVSS 3.0 base score
0.54%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

GIMP HDR File Parsing Heap-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 specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27803.

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.gnome.org/GNOME/gegl/-/commit/0e68b7471dabf2800d780819c19bd5e6462f565f Patch
https://www.zerodayinitiative.com/advisories/ZDI-25-910/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00021.html Mailing List

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Source: NIST National Vulnerability Database (record CVE-2025-10921), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.