CVE-2020-6618
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__find_table.
CVE-2020-6618 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 1.14%, the 67th percentile. No source names a fixed version.
- Severity
- 8.8 HighCVSS 3.1, NVD
- Exploit chance
- 1.14%EPSS, 67th 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__find_table.
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__find_table.
- Record
CVE-2020-6618- 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__find_table.
- Record
CVE-2020-6618- Updated
- 2026-11-02
EUVDEUVD-2020-27766No score
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__find_table.
- Record
EUVD-2020-27766- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-76cg-r53q-v3qwNo score
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__find_table.
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__find_table.
- Record
GHSA-76cg-r53q-v3qw- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-6618
stb stb_truetype.h through 1.22 has a heap-based buffer over-read in stbtt__find_table.
- Record
UBUNTU-CVE-2020-6618- 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.