Vulnerability · Published Jan 18, 2026 · Assigned by VulDB

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

Medium 5.3

In plain English

A medium-severity integer overflow in raylib from raysan5. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 85.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
raysan5	raylib	909f040

Weakness: CWE-190, CWE-189 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References

VDB-341706 | raysan5 raylib rtext.c LoadFontData integer overflow vdb-entry, technical-description
VDB-341706 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #733343 | raysan5 raylib 909f040 Integer Overflow third-party-advisory
https://github.com/raysan5/raylib/issues/5436 issue-tracking
https://github.com/raysan5/raylib/pull/5450 issue-tracking
https://github.com/oneafter/1224/blob/main/segv1 exploit
https://github.com/raysan5/raylib/commit/5a3391fdce046bc5473e52afbd835dd2dc127146 patch
https://github.com/raysan5/raylib/ product