CVE-2025-53014 — ImageMagick has a Heap Buffer Overflow in...
LOW
ImageMagick has a Heap Buffer Overflow in InterpretImageFilename
Published August 25, 2025Updated September 10, 2026Source: osv
Summary
# Heap Buffer Overflow in InterpretImageFilename
## Summary
A heap buffer overflow was identified in the `InterpretImageFilename` function of ImageMagick. The issue stems from an off-by-one error that causes out-of-bounds memory access when processing format strings containing consecutive percent signs (`%%`).
## Environment
- **OS**: Arch Linux (Linux gmkhost 6.14.2-arch1-1 # 1 SMP PREEMPT_DYNAMIC Thu, 10 Apr 2025 18:43:59 +0000 x86_64 GNU/Linux (GNU libc) 2.41)
- **Architecture**: x86_64
- **Compiler**: gcc (GCC) 15.1.1 20250425
## Reproduction
### Build Instructions
```bash
# Clone the repository
git clone https://github.com/ImageMagick/ImageMagick.git
cd ImageMagick
git reset --hard 8fff9b4f44d2e8b5cae2bd6db70930a144d15f12
# Build with AddressSanitizer
export CFLAGS="-fsanitize=address -g -O1"
export CXXFLAGS="-fsanitize=address -g -O1"
export LDFLAGS="-fsanitizer=address"
./configure
make
# Set library path and trigger the crash
export LD_LIBRARY_PATH="$(pwd)/MagickWand/.libs:$(pwd)/MagickCore/.libs:$LD_LIBRARY_PATH"
./utilities/.libs/magick %% a
```
### Minimum Trigger
```bash
./utilities/.libs/magick %% [any_output_filename]
```
## Crash Analysis
### AddressSanitizer Output
```
$ ./utilities/.libs/magick %% a
=================================================================
==2227694==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7037f99e3ad3 at pc 0x741801e81a17 bp 0x7ffd22fa4e00 sp 0x7ffd22fa45b8
READ of size 1 at 0x7037f99e3ad3 thread T0
#0 0x741801e81a16 in strchr /usr/src/debug/gcc/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:746
#1 0x7418013b4f06 in InterpretImageFilename MagickCore/image.c:1674
#2 0x7418012826a3 in ReadImages MagickCore/constitute.c:1040
#3 0x741800e4696b in CLINoImageOperator MagickWand/operation.c:4959
#4 0x741800e64de7 in CLIOption MagickWand/operation.c:5473
#5 0x741800d92edf in ProcessCommandOptions MagickWand/magick-cli.c:653
#6 0x741800d94816 in MagickImageCommand MagickWand/magick-cli.c:1392
#7 0x741800d913e4 in MagickCommandGenesis MagickWand/magick-cli.c:177
#8 0x5ef7a3546638 in MagickMain utilities/magick.c:162
#9 0x5ef7a3546872 in main utilities/magick.c:193
#10 0x7417ff53f6b4 (/usr/lib/libc.so.6+0x276b4) (BuildId: 468e3585c794491a48ea75fceb9e4d6b1464fc35)
#11 0x7417ff53f768 in __libc_start_main (/usr/lib/libc.so.6+0x27768) (BuildId: 468e3585c794491a48ea75fceb9e4d6b1464fc35)
#12 0x5ef7a3546204 in _start (/home/kforfk/workspace/fuzz_analysis/saigen/ImageMagick/utilities/.libs/magick+0x2204) (BuildId: 96677b60628cf297eaedb3eb17b87000d29403f2)
0x7037f99e3ad3 is located 0 bytes after 3-byte region [0x7037f99e3ad0,0x7037f99e3ad3)
allocated by thread T0 here:
#0 0x741801f20e15 in malloc /usr/src/debug/gcc/gcc/libsanitizer/asan/asan_malloc_linux.cpp:67
#1 0x7418013e86bc in AcquireMagickMemory MagickCore/memory.c:559
SUMMARY: AddressSanitizer: heap-buffer-overflow MagickCore/image.c:1674 in InterpretImageFilename
Shadow bytes around the buggy address:
0x7037f99e3800: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa
0x7037f99e3880: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa
0x7037f99e3900: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa
0x7037f99e3980: fa fa 07 fa fa fa 00 fa fa fa fd fa fa fa fd fa
0x7037f99e3a00: fa fa 07 fa fa fa fd fa fa fa fd fa fa fa 00 04
=>0x7037f99e3a80: fa fa 00 04 fa fa 00 00 fa fa[03]fa fa fa 03 fa
0x7037f99e3b00: fa fa 00 01 fa fa fa fa fa fa fa fa fa fa fa fa
0x7037f99e3b80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x7037f99e3c00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x7037f99e3c80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x7037f99e3d00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==2227694==ABORTING
```
## Root Cause Analysis
The first command line argument is interpreted as `MagickImageCommand`:
https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/utilities/magick.c#L83
```c
const CommandInfo
MagickCommands[] =
{
MagickCommandSize("magick", MagickFalse, MagickImageCommand),
```
It is invoked here:
https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L220
```c
status=command(image_info,argc,argv,&text,exception);
```
The execution then follows this path:
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L1387
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L586
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/magick-cli.c#L419
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/operation.c#L5391
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/operation.c#L5473
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickWand/operation.c#L4959
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/constitute.c#L1009
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/constitute.c#L1039
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/image.c#L1649
- https://github.com/ImageMagick/ImageMagick/blob/8fff9b4f44d2e8b5cae2bd6db70930a144d15f12/MagickCore/image.c#L1674
The execution eventually reaches `InterpretImageFilename` and enters a loop. The `format` variable here is `"%%"`. At this point, it is safe to access `*(format + 2)` but not safe to access `*(format + 3)`.
```c
for (p=strchr(format,'%'); p != (char *) NULL; p=strchr(p+1,'%'))
{
q=(char *) p+1;
if (*q == '%')
{
p=q+1;
continue;
}
```
The first `strchr` call returns a pointer equal to `format` and assigns it to `p`. Then `q` is initialized with `p + 1` (`format + 1`), and `*q` is `'%'`, so the code enters the if branch. Here, `p` is reassigned to `q + 1` (`format + 2`).
In the next iteration, `p + 1` (`format + 3`) is passed to `strchr`, and when `strchr` accesses it, this causes an out-of-bounds read.
Advisory Timeline
- First published August 25, 2025 (413 days ago).
- Last revised September 10, 2026 — 380 days after initial publication.
Remediation
Upgrade to the fixed version using your package manager.
NuGet
Update Magick.NET-Q16-HDRI-x86 to 14.7.0 or laterdotnet add package Magick.NET-Q16-HDRI-x86 --version 14.7.0
NuGet
Update Magick.NET-Q8-OpenMP-arm64 to 14.7.0 or laterdotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.7.0
NuGet
Update Magick.NET-Q16-arm64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-arm64 --version 14.7.0
NuGet
Update Magick.NET-Q16-x86 to 14.7.0 or laterdotnet add package Magick.NET-Q16-x86 --version 14.7.0
NuGet
Update Magick.NET-Q8-OpenMP-x64 to 14.7.0 or laterdotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.7.0
NuGet
Update Magick.NET-Q16-HDRI-x64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-HDRI-x64 --version 14.7.0
NuGet
Update Magick.NET-Q16-HDRI-arm64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.7.0
NuGet
Update Magick.NET-Q16-HDRI-OpenMP-x64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.7.0
NuGet
Update Magick.NET-Q8-x86 to 14.7.0 or laterdotnet add package Magick.NET-Q8-x86 --version 14.7.0
NuGet
Update Magick.NET-Q16-HDRI-AnyCPU to 14.7.0 or laterdotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.7.0
NuGet
Update Magick.NET-Q8-arm64 to 14.7.0 or laterdotnet add package Magick.NET-Q8-arm64 --version 14.7.0
NuGet
Update Magick.NET-Q16-OpenMP-x64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.7.0
NuGet
Update Magick.NET-Q8-AnyCPU to 14.7.0 or laterdotnet add package Magick.NET-Q8-AnyCPU --version 14.7.0
NuGet
Update Magick.NET-Q8-x64 to 14.7.0 or laterdotnet add package Magick.NET-Q8-x64 --version 14.7.0
NuGet
Update Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.7.0
NuGet
Update Magick.NET-Q16-AnyCPU to 14.7.0 or laterdotnet add package Magick.NET-Q16-AnyCPU --version 14.7.0
NuGet
Update Magick.NET-Q16-x64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-x64 --version 14.7.0
NuGet
Update Magick.NET-Q16-OpenMP-arm64 to 14.7.0 or laterdotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.7.0
After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.
Affected Packages (18)
Affects 1 ecosystem: nuget (18).
| Package | Ecosystem | Affected | Fixed In |
|---|---|---|---|
| Magick.NET-Q16-HDRI-x86 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+193 more) | 14.7.0 |
| Magick.NET-Q8-OpenMP-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+41 more) | 14.7.0 |
| Magick.NET-Q16-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+41 more) | 14.7.0 |
| Magick.NET-Q16-x86 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+212 more) | 14.7.0 |
| Magick.NET-Q8-OpenMP-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+93 more) | 14.7.0 |
| Magick.NET-Q16-HDRI-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+193 more) | 14.7.0 |
| Magick.NET-Q16-HDRI-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+41 more) | 14.7.0 |
| Magick.NET-Q16-HDRI-OpenMP-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+93 more) | 14.7.0 |
| Magick.NET-Q8-x86 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+212 more) | 14.7.0 |
| Magick.NET-Q16-HDRI-AnyCPU | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+193 more) | 14.7.0 |
| Magick.NET-Q8-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+41 more) | 14.7.0 |
| Magick.NET-Q16-OpenMP-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+93 more) | 14.7.0 |
| Magick.NET-Q8-AnyCPU | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+196 more) | 14.7.0 |
| Magick.NET-Q8-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+212 more) | 14.7.0 |
| Magick.NET-Q16-HDRI-OpenMP-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+41 more) | 14.7.0 |
| Magick.NET-Q16-AnyCPU | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+196 more) | 14.7.0 |
| Magick.NET-Q16-x64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+212 more) | 14.7.0 |
| Magick.NET-Q16-OpenMP-arm64 | nuget | 10.0.0, 10.1.0, 11.0.0, 11.1.0 (+41 more) | 14.7.0 |
Vulnerability Classification
Common Weakness Enumeration (CWE) identifiers for this vulnerability type.
- CWE-125Out-of-bounds ReadMITRE
- CWE-193
CVSS Score Breakdown
What the CVSS (Common Vulnerability Scoring System) 3.7 score means for each attack dimension.
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-hm4x-r5hc-794fWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-53014ADVISORY
- https://github.com/ImageMagick/ImageMagick/commit/29d82726c7ec20c07c49ba263bdcea16c2618e03WEB
- https://github.com/ImageMagick/ImageMagick6/commit/79b6ed03770781d996d1710b89fbb887e5ea758aWEB
- https://github.com/ImageMagick/ImageMagickPACKAGE
- https://github.com/dlemstra/Magick.NET/releases/tag/14.7.0WEB
- https://lists.debian.org/debian-lts-announce/2025/09/msg00012.htmlWEB
Frequently Asked Questions
- What is CVE-2025-53014?
- ImageMagick has a Heap Buffer Overflow in InterpretImageFilename This vulnerability has been assigned a severity rating of LOW (CVSS score: 3.7/10).
- How do I check if my project is affected by CVE-2025-53014?
- CVE-2025-53014 affects Magick.NET-Q16-HDRI-x86, Magick.NET-Q8-OpenMP-arm64 and Magick.NET-Q16-arm64 (and 15 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-53014 and 200,000+ other known vulnerabilities.
Severity & Exploitability
CVSS Score
3.7
Exploitation is difficult or impact is minor. Address in your next planned update.
Also Known As
GHSA-hm4x-r5hc-794f
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