{"id":"CVE-2025-66628","aliases":["GHSA-6hjr-v6g4-3fm8"],"url":"https://o3.security/vulnerability/CVE-2025-66628","summary":"ImageMagick is vulnerable to an Integer Overflow in TIM decoder leading to out of bounds read (32-bit only)","details":"### Summary\nThe TIM (PSX TIM) image parser in ImageMagick contains a critical integer overflow vulnerability in the `ReadTIMImage` function (`coders/tim.c`). The code reads `width` and `height` (16-bit values) from the file header and calculates `image_size = 2 * width * height` without checking for overflow.\nOn 32-bit systems (or where `size_t` is 32-bit), this calculation can overflow if `width` and `height` are large (e.g., 65535), wrapping around to a small value. This results in a small heap allocation via `AcquireQuantumMemory` and later operations relying on the dimensions can trigger an out of bounds read.\n### Vulnerable Code\nFile: `coders/tim.c`\n```c\nwidth=ReadBlobLSBShort(image);\nheight=ReadBlobLSBShort(image);\nimage_size=2*width*height;       // Line 234 - NO OVERFLOW CHECK!\n```\n\n### Impact\nThis vulnerability can lead to Arbitrary Memory Disclosure due to an out of bounds read on 32-bit systems.","published":"2025-12-10T22:04:49.639Z","modified":"2026-08-12T03:51:13.769379767Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Magick.NET-Q16-AnyCPU","fixedVersion":"14.10.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-HDRI-AnyCPU","fixedVersion":"14.10.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-HDRI-x86","fixedVersion":"14.10.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q16-x86","fixedVersion":"14.10.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-AnyCPU","fixedVersion":"14.10.0"},{"ecosystem":"NuGet","name":"Magick.NET-Q8-x86","fixedVersion":"14.10.0"}],"fix":{"url":"https://github.com/dlemstra/Magick.NET/commit/2dfa08e15cfd11016a79615994787b14f9048b1c","label":"dlemstra/Magick.NET@2dfa08e"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66628.json"},{"type":"ADVISORY","url":"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-6hjr-v6g4-3fm8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66628"},{"type":"FIX","url":"https://github.com/dlemstra/Magick.NET/commit/2dfa08e15cfd11016a79615994787b14f9048b1c"},{"type":"PACKAGE","url":"https://github.com/ImageMagick/ImageMagick"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:13.769379767Z"}}