Medium severity · published Sep 9, 2026
CVE-2026-79515
An out-of-bounds read in the stbtt_GetGlyphShape component of nothings stb commit 31c1ad3 allows attackers to cause a Denial of Service (DoS) via sending a crafted TTF file
4.3
CVSS
0.4%
EPSS
No
On KEV
Description
An out-of-bounds read in the stbtt_GetGlyphShape component of nothings stb commit 31c1ad3 allows attackers to cause a Denial of Service (DoS) via sending a crafted TTF file.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-79515
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-79515
github.com
https://github.com/nothings/stb/issues/1962
github.com
https://github.com/user-attachments/files/31364325/poc_truetype.c
github.com
https://github.com/user-attachments/files/31364326/gen_ttf.py