CVE-2025-62171 ImageMagick vulnerable to denial of service via integer overflow in BMP decoder on 32-bit systems

What is CVE-2025-62171?

CVE-2025-62171 is a medium-severity vulnerability in Imagemagick Imagemagick, published on 17 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ImageMagick is an open source software suite for displaying, converting, and editing raster image files. In ImageMagick versions prior to 7.1.2-7 and 6.9.13-32, an integer overflow vulnerability exists in the BMP decoder on 32-bit systems. The vulnerability occurs in coders/bmp.c when calculating the extent value by multiplying image columns by bits per pixel. On 32-bit systems with size_t of 4 bytes, a malicious BMP file with specific dimensions can cause this multiplication to overflow and wrap to zero. The overflow check added to address CVE-2025-57803 is placed after the overflow occurs, making it ineffective. A specially crafted 58-byte BMP file with width set to 536,870,912 and 32 bits per pixel can trigger this overflow, causing the bytes_per_line calculation to become zero. This vulnerability only affects 32-bit builds of ImageMagick where default resource limits for width, height, and area have been manually increased beyond their defaults. 64-bit systems with size_t of 8 bytes are not vulnerable, and systems using default ImageMagick resource limits are not vulnerable. The vulnerability is fixed in versions 7.1.2-7 and 6.9.13-32.

Weakness: CWE-190

Which versions are affected by CVE-2025-62171?

12 open source packages ship an affected version, including Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU and Magick.NET-Q16-HDRI-x86. It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2025-62171?

Upgrade Magick.NET-Q16-AnyCPU to 14.9.0 or later.

Is CVE-2025-62171 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62171 exists.

Other vulnerabilities in Imagemagick Imagemagick

• CVE-2019-19952 Use after free in n/a Critical 9.8
• CVE-2018-16328 Null dereference in n/a Critical 9.8
• CVE-2018-16329 Null dereference in n/a Critical 9.8
• CVE-2017-18210 Null dereference in n/a Critical 9.8
• CVE-2017-14138 Denial of service in n/a Critical 9.8

All Imagemagick Imagemagick vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CLSA-2025-1764280893, CLSA-2025-1764324335, CLSA-2025-1764324579, CLSA-2025-1764773600, DEBIAN-CVE-2025-62171, DLA-4339-1 and 15 more.