How severe is CVE-2026-5315?

CVE-2026-5315 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-5315 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5315?

CVE-2026-5315 affects Nothings Stb Truetype.h. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5315?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-5315 have an EU (EUVD) identifier?

Yes. CVE-2026-5315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18109.

When was CVE-2026-5315 published?

CVE-2026-5315 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-5315

CVE-2026-5315 is a medium-severity vulnerability in Nothings Stb Truetype.h with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 5.0
CVSS v4: 2.1
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18109
Weakness: CWE-119
Affected product: Nothings Stb Truetype.h
Published: 2026-04-02
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-5315?: CVE-2026-5315 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-5315 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5315?: CVE-2026-5315 affects Nothings Stb Truetype.h. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5315?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5315 have an EU (EUVD) identifier?: Yes. CVE-2026-5315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18109.
When was CVE-2026-5315 published?: CVE-2026-5315 was published on 2026-04-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nothings:stb_truetype.h:*:*:*:*:*:*:*:*

More vulnerabilities in Nothings Stb Truetype.h

CVE-2020-6623 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
CVE-2020-6622 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
CVE-2020-6621 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT.
CVE-2020-6620 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_get8.
CVE-2020-6619 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__buf_seek.
CVE-2020-6618 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__find_table.

All CVEs affecting Nothings Stb Truetype.h →

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