Heap-based Buffer Overflow in GIMP HDR Parsing (CVE‑2026‑2050) Enables Remote Code Execution
What It Is — A heap‑based buffer overflow exists in GIMP’s handling of HDR image files. Improper length validation allows crafted HDR data to overwrite heap memory, leading to arbitrary code execution.
Exploitability — Remote attackers can trigger the flaw by convincing a user to open a malicious HDR file or visit a page that forces the file to be loaded. A proof‑of‑concept exists; CVSS 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Affected Products — GIMP (all versions prior to the April 2026 security update).
TPRM Impact —
- Organizations that embed GIMP in internal workflows (e.g., marketing, design, documentation) may expose endpoints to RCE.
- Compromise of a workstation can serve as a foothold for lateral movement into broader corporate networks, affecting third‑party risk assessments.
Recommended Actions —
- Deploy the GIMP patch released in April 2026 immediately.
- Verify all endpoints run the patched version (≥ 2.10.34).
- Block or sandbox HDR file handling where not required.
- Monitor process creation and memory‑corruption alerts on systems with GIMP installed.
- Update third‑party risk registers to reflect the new vulnerability status.