How severe is CVE-2026-5314?

CVE-2026-5314 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-2026-5314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5314?

CVE-2026-5314 affects Nothings Stb Truetype.h. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5314?

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

Does CVE-2026-5314 have an EU (EUVD) identifier?

Yes. CVE-2026-5314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18092.

When was CVE-2026-5314 published?

CVE-2026-5314 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-5314

CVE-2026-5314 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% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18092
Weakness: CWE-119
Affected product: Nothings Stb Truetype.h
Published: 2026-04-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-5314?: 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.
How severe is CVE-2026-5314?: CVE-2026-5314 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-2026-5314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5314?: CVE-2026-5314 affects Nothings Stb Truetype.h. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5314?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5314 have an EU (EUVD) identifier?: Yes. CVE-2026-5314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18092.
When was CVE-2026-5314 published?: CVE-2026-5314 was published on 2026-04-01 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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