What is CVE-2022-25514?

CVE-2022-25514 is a high-severity vulnerability in Nothings Stb Truetype.h, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-03-17.

How severe is CVE-2022-25514?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2022-25514 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Nothings Stb Truetype.h

CVE-2022-25514

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.

Vulnerability class: Buffer Overflow

Published 2022-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Nothings Stb Truetype.h — versions 1.26

Weakness classification (CWE)

Public proof-of-concept exploits

References

github.com/nothings/stb/issues/1286 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-25514?: CVE-2022-25514 is a high-severity vulnerability in Nothings Stb Truetype.h, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-03-17.
How severe is CVE-2022-25514?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-25514 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.