TI-2022-09146 Aliases CVE-2022-25514 GHSA-5hw4-hqhq-pf4g

stb_truetype.h v1.26 was discovered to contain a heap-buffer-overflow via the function…

HIGH 66CWE-120Published 2022-03-17 · Updated 2024-10-30

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

stb_truetype.h v1.26 was discovered to contain a heap-buffer-overflow via the function ttUSHORT() at stb_truetype.h. NOTE: Third party has disputed stating that the source code has also a disclaimer that it should only be used with trusted input.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01037 64th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nothings:stb_truetype.h:1.26:::::::*	1.26	Vulnerable	nothings

cpe:2.3:a:nothings:stb_truetype.h:1.26:*:*:*:*:*:*:* Versions 1.26 Vulnerable ·nothings

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-25514
2026-10-03 Alias added: GHSA-5hw4-hqhq-pf4g

References

Exploit 1

https://github.com/nothings/stb/issues/1286

TI-2026-04647 Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of-bounds CVSS 4.0MEDIUM 5.3
TI-2026-04646 Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal out-of-bounds CVSS 4.0MEDIUM 5.3
TI-2020-05450 stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index. CVSS 3.1HIGH 8.8
TI-2020-05449 stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8. CVSS 3.1HIGH 8.8
TI-2020-05448 stb stb_truetype.h through 1.22 has a heap-based buffer over-read in ttUSHORT. CVSS 3.1HIGH 8.8
TI-2020-05447 stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_get8. CVSS 3.1HIGH 8.8

See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences