CVE-2026-5314

Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds

HIGH
8.8
CVSS Score
Published: April 1, 2026 at 10:15 PM UTC
Updated: June 17, 2026 at 10:58 AM UTC
2 products affected across 1 vendorStb Truetype.hStb

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/vuln/354646
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/354646/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/submit/780558
ExploitThird Party Advisory
Source: cverecord
https://gist.github.com/d0razi/cb31a92f3205a4373f19b7da25946848

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125CWE-119

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