EUVD-2026-63451
GHSA-5gmv-r46m-x6rr
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Local vector because exploitation requires the victim to open a file; no attacker privileges needed; mandatory user interaction; full impact on all three pillars with no scope change.
Primary rating from Vendor (zdi).
CVSS VectorVendor: zdi
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
GIMP TIF 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 TIF 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-29398.
AnalysisAI
Heap-based buffer overflow in GIMP's TIF file parser (CWE-122) enables remote code execution on affected installations when a user opens a crafted TIFF image. Confirmed affected version is GIMP 3.2.2 per EUVD-2026-63451, with the flaw originating from missing length validation before copying attacker-controlled data to a heap buffer. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target user to actively open a crafted TIFF file using GIMP 3.2.2 - the explicitly confirmed affected version per EUVD-2026-63451. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.8 with vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H reflects a local, user-interaction-dependent attack with no attacker privileges required and full impact across all three security pillars. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious TIFF image embedding an oversized data field targeting GIMP's heap-based TIF parser buffer. The file is delivered via a phishing email, a compromised file-sharing link, or a webpage that prompts the victim to download and open it - inducing the required user interaction. … |
| Remediation | Apply the upstream fix available as Git commit 77e1a11636fae53c922fe92273b8f4e33c7a9176 on the GNOME GitLab repository at https://gitlab.gnome.org/GNOME/gimp/-/commit/77e1a11636fae53c922fe92273b8f4e33c7a9176, which directly addresses the heap buffer overflow in TIF parsing. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory GIMP installations and alert users to avoid opening TIFF files from untrusted sources; communicate the risk and expected response timeline. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
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External POC / Exploit Code
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