CVE-2020-6622
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
CVE-2020-6622 is a high vulnerability (CVSS 8.8) in Nothings Stb Truetype.h, published January 8, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.45%, the 73rd percentile. No source names a fixed version.
- Severity
- 8.8 HighCVSS 3.1, NVD
- Exploit chance
- 1.45%EPSS, 73rd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libstbUbuntu:20.04:LTS | All versions, plus listed versions 0.0~git20190817.1.052dce1-1 | None known |
libstbUbuntu:22.04:LTS | All versions, plus listed versions 0.0~git20200713.b42009b+ds-10.0~git20210910.af1a5bc+ds-1 | None known |
libstbUbuntu:24.04:LTS | All versions, plus listed versions 0.0~git20230129.5736b15+ds-10.0~git20230129.5736b15+ds-1.10.0~git20230129.5736b15+ds-1.2 | None known |
libstbUbuntu:25.10 | All versions, plus listed versions 0.0~git20240715.f7f20f39fe4f+ds-10.0~git20241109.5c20573+ds-1 | None known |
libstbUbuntu:26.10 | All versions, plus listed versions 0.0~git20250907.fede005+ds-1 | None known |
libstbUbuntu:26.04:LTS | All versions, plus listed versions 0.0~git20241109.5c20573+ds-10.0~git20250907.fede005+ds-1 | None known |
What each source reports
NVD Score used
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
- Record
CVE-2020-6622- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE ListNo score
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
- Record
CVE-2020-6622- Updated
- 2026-11-02
EUVDEUVD-2020-27770No score
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
- Record
EUVD-2020-27770- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hw3p-v9jj-rf7jNo score
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
- Record
GHSA-hw3p-v9jj-rf7j- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-6622
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__buf_peek8.
- Record
UBUNTU-CVE-2020-6622- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.