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CVE-2025-15534

raysan5 raylib rtext.c LoadFontData integer overflow

4.8 MediumFix available

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The identifier of the patch is 5a3391fdce046bc5473e52afbd835dd2dc127146. It is suggested to install a patch to address this issue.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.24%Up 0.2 points since Jan 18, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.8

raysan5 raylib rtext.c LoadFontData integer overflow

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The identifier of the patch is 5a3391fdce046bc5473e52afbd835dd2dc127146. It is suggested to install a patch to address this issue.

Record
CVE-2025-15534
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CVSS 3.0
5.3 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CVSS 2.0
4.3 AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
Weakness
CWE-190, CWE-189
Updated
2026-11-02
EUVDEUVD-2026-3184 4.8

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The identifier of the patch is 5a3391fdce046bc5473e52afbd835dd2dc127146. It is suggested to install a patch to address this issue.

Record
EUVD-2026-3184
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
GitHub AdvisoriesGHSA-4696-58w6-rqw4 1.9

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the...

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The identifier of the patch is 5a3391fdce046bc5473e52afbd835dd2dc127146. It is suggested to install a patch to address this issue.

Record
GHSA-4696-58w6-rqw4
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-190
Updated
2026-11-02
NVD 1.9

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The identifier of the patch is 5a3391fdce046bc5473e52afbd835dd2dc127146. It is suggested to install a patch to address this issue.

Record
CVE-2025-15534
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
4.3 MediumAV:L/AC:L/Au:S/C:P/I:P/A:P
Weakness
CWE-189, CWE-190
Updated
2026-11-02
OSV 1.9

raysan5 raylib rtext.c LoadFontData integer overflow

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The identifier of the patch is 5a3391fdce046bc5473e52afbd835dd2dc127146. It is suggested to install a patch to address this issue.

Record
CVE-2025-15534
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Weakness
CWE-189, CWE-190
Updated
2026-11-02
OSVJLSEC-2026-531 1.9

A vulnerability was identified in raysan5 raylib up to 909f040. Affected by this issue is the function LoadFontData of the file src/rtext.c. The manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The identifier of the patch is 5a3391fdce046bc5473e52afbd835dd2dc127146. It is suggested to install a patch to address this issue.

Record
JLSEC-2026-531
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 2.0
4.3 MediumAV:L/AC:L/Au:S/C:P/I:P/A:P
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2026:10071-1 No score

libraylib550-5.5-2.1 on GA media

These are all security issues fixed in the libraylib550-5.5-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:10071-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20717-1 No score

Security update for raylib

This update for raylib fixes the following issues:

Changes in raylib:

  • security update:

    • CVE-2025-15533: Fix heap-based buffer overflow via GenImageFontAtlas function manipulation (bsc#1256900)
    • CVE-2025-15534: Fix integer overflow vulnerability in LoadFontData (bsc#1256901)
  • Update to 5.5:

    • NEW raylib pre-configured Windows package: The new raylib portable and self-contained Windows package for raylib 5.5, intended for nobel devs that start in programming world, comes with one big addition: support for C code building for Web platform with one-single-mouse-click! For the last 10 years, the pre-configured raylib Windows package allowed to edit simple C projects on Notepad++ and easely compile Windows executables with an automatic script; this new release adds the possibility to compile the same C projects for Web platform with a simple mouse click. This new addition greatly simplifies C to WebAssembly project building for new users. The raylib Windows Installer package can be downloaded for free from raylib on itch.io.
    • NEW raylib project creator tool: A brand new tool developed to help raylib users to setup new projects in a professional way. raylib project creator generates a complete project structure with multiple build systems ready-to-use and GitHub CI/CD actions pre-configured. It only requires providing some C files and basic project parameters! The tools is free and open-source, and it can be used online!.
    • NEW Platform backend supported: RGFW: Thanks to the rcore platform-split implemented in raylib 5.0, adding new platforms backends has been greatly simplified, new backends can be added using provided template, self-contained in a single C module, completely portable. A new platform backend has been added: RGFW. RGFW is a new single-file header-only portable library (RGFW.h) intended for platform-functionality management (windowing and inputs); in this case for desktop platforms (Windows, Linux, macOS) but also for Web platform. It adds a new alternative to the already existing GLFW and SDL platform backends.
    • NEW Platform backend version supported: SDL3: Previous raylib 5.0 added support for SDL2 library, and raylib 5.5 not only improves SDL2 functionality, with several issues reviewed, but also adds support for the recently released big SDL update in years: SDL3. Now users can select at compile time the desired SDL version to use, increasing the number of potential platforms supported in the future!
    • NEW Retro-console platforms supported: Dreamcast, N64, PSP, PSVita, PS4: Thanks to the platform-split on raylib 5.0, supporting new platform backends is easier than ever! Along the raylib rlgl module support for the OpenGL 1.1 graphics API, it opened the door to multiple homebrew retro-consoles backend implementations! It's amazing to see raylib running on +20 year old consoles like Dreamcast, PSP or PSVita, considering the hardware constraints of those platforms and proves raylib outstanding versability! Those additional platforms can be found in separate repositories and have been created by the amazing programmer Antonio Jose Ramos Marquez (@psxdev).
    • NEW GPU Skinning support: After lots of requests for this feature, it has been finally added to raylib thanks to the contributor Daniel Holden (@orangeduck), probably the developer that has further pushed models animations with raylib, developing two amazing tools to visualize and test animations: GenoView and BVHView. Adding GPU skinning was a tricky feature, considering it had to be available for all raylib supported platforms, including limited ones like Raspberry Pi with OpenGL ES 2.0, where some advance OpenGL features are not available (UBO, SSBO, Transform Feedback) but a multi-platform solution was found to make it possible. A new example, …
Record
openSUSE-SU-2026:20717-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
Raylib_jll
Julia
before 6.0.0+0
6.0.0+0
raylib
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
before 5.5-2.1
5.5-2.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-15534 is a medium vulnerability (CVSS 4.8) in Raylib, published January 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 14th percentile. Fixed in Raylib_jll 6.0.0+0.

References

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