Buffer overflow in Nothings Stb
CVE-2026-5315
A vulnerability was determined in Nothings stb up to 1.26. The affected element is the function stbtt__buf_get8 in the library stb_truetype.h of the component TTF File Handler. Executing a manipulation can lead to out-of-bounds read. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.008 (56.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.008 · change: +0.003
Affected products
- Nothings Stb — versions 1.0, 1.1, 1.2
- Nothings Stb Truetype.h
Weakness classification (CWE)
References
- vuldb.com/vuln/354647 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/354647/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/780559 (VDB Entry, Third Party Advisory, third-party-advisory)
- gist.github.com/d0razi/c11dd07c75f3b795e4f8bbfd6e2f0d29 (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-5315?
- CVE-2026-5315 is a medium-severity vulnerability in Nothings Stb, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.3/10. Published 2026-04-02.
- How severe is CVE-2026-5315?
- Medium severity. CVSS v3 base score is 4.3 out of 10.