CVE-2025-15534

MediumPublic PoC

Published: 18 January 2026

Published

18 January 2026

Modified

23 February 2026

KEV Added

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Patch

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CVSS Score v4 4.8 CVSS: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

EPSS Score 0.0001 2.9th percentile

Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-15534 is a medium-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Raylib Raylib. Its CVSS base score is 4.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 2.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-15534 is an integer overflow vulnerability (CWE-189, CWE-190) in the LoadFontData function of the src/rtext.c file in the raylib library by raysan5, affecting versions up to commit 909f040. The issue was published on 2026-01-18 and carries a CVSS v3.1 base score of 5.3.

Exploitation requires a local attacker with low privileges (AV:L/AC:L/PR:L/UI:N/S:U), enabling limited impacts on confidentiality, integrity, and availability (C:L/I:L/A:L). A public exploit is available, which could be leveraged in a local environment.

The recommended mitigation is to apply the patch at commit 5a3391fdce046bc5473e52afbd835dd2dc127146. Additional details are documented in raylib repository issue #5436 and pull request #5450.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-3184

Vulnerability details

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.

CWE(s): CWE-189 CWE-190

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

T1203 Exploitation for Client Execution Execution

Adversaries may exploit software vulnerabilities in client applications to execute code.

attack.mitre.org →

Why these techniques?

Integer overflow in font loading function enables local memory corruption leading to limited code execution or privilege escalation in applications using the library.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1