What’s Vulnerable › Vulnerabilities

CVE-2025-15534: raysan5 raylib rtext.c LoadFontData integer overflow

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-18 · updated 2026-06-17
• Weakness: CWE-189

Description

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.

Affected products

• raysan5 raylib: before 2026-01-01 — fixed in 2026-01-01

How to fix

Upgrade to a fixed version: raysan5 raylib 2026-01-01. Check the vendor advisory for mitigations.

References

• https://github.com/oneafter/1224/blob/main/segv1
• https://github.com/raysan5/raylib/
• https://github.com/raysan5/raylib/commit/5a3391fdce046bc5473e52afbd835dd2dc127146
• https://github.com/raysan5/raylib/issues/5436
• https://github.com/raysan5/raylib/pull/5450
• https://vuldb.com/?ctiid.341706
• https://vuldb.com/?id.341706
• https://vuldb.com/?submit.733343

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