High severity · published Apr 1, 2026
CVE-2026-5314
Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability was found in Nothings stb up to 1.26. Impacted is the function stbtt_InitFont_internal in the library stb_truetype.h of the component TTF File Handler. Performing a manipulation results in out-of-bounds read. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ST
stb · Nothings
1.0; 1.1; 1.2; 1.3; 1.4; 1.5; +21 more · source: vendor
ST
Stb Truetype.h · Nothings
through 1.26 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5314
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5314
Exploit
https://gist.github.com/d0razi/cb31a92f3205a4373f19b7da25946848
Third Party Advisory
https://vuldb.com/submit/780558
Third Party Advisory
https://vuldb.com/vuln/354646
Permissions Required
https://vuldb.com/vuln/354646/cti
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