CVE-2019-19720
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted...
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
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
What each source reports
NVD Score used
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
- Record
CVE-2019-19720- 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-787
- Updated
- 2026-11-02
CVE List No score
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
- Record
CVE-2019-19720- Updated
- 2026-11-02
EUVDEUVD-2019-9324 No score
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
- Record
EUVD-2019-9324- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gmjr-xhqw-c9qx No score
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted...
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
- Record
GHSA-gmjr-xhqw-c9qx- Updated
- 2026-11-02
OSV
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
- Record
CVE-2019-19720- 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
OSVDEBIAN-CVE-2019-19720
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
- Record
DEBIAN-CVE-2019-19720- 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
OSVUBUNTU-CVE-2019-19720
Yabasic 2.86.1 has a heap-based buffer overflow in the yylex() function in flex.c via a crafted BASIC source file.
- Record
UBUNTU-CVE-2019-19720- 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
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
yabasicDebian:12 |
All versions, plus listed versions 1:2.90.3-11:2.90.5-11:2.91.1-11:2.91.3-11:2.91.4-1 |
None known |
yabasicDebian:13 |
All versions, plus listed versions 1:2.91.1-11:2.91.3-11:2.91.4-1 |
None known |
yabasicDebian:14 |
All versions, plus listed versions 1:2.91.1-11:2.91.3-11:2.91.4-1 |
None known |
yabasicUbuntu:18.04:LTS |
All versions, plus listed versions 1:2.78.2-21:2.78.3-11:2.78.5-1 |
None known |
yabasicUbuntu:20.04:LTS |
All versions, plus listed versions 1:2.84.2-11:2.84.3-11:2.85.0-11:2.86.0-11:2.86.4-11:2.86.4-1build11:2.86.6-1 |
None known |
yabasicUbuntu:22.04:LTS |
All versions, plus listed versions 1:2.90.1-11:2.90.2-1 |
None known |
yabasicUbuntu:24.04:LTS |
All versions, plus listed versions 1:2.90.3-1 |
None known |
yabasicUbuntu:25.10 |
All versions, plus listed versions 1:2.91.1-11:2.91.3-11:2.91.4-1 |
None known |
yabasicUbuntu:26.10 |
All versions, plus listed versions 1:2.91.4-1build1 |
None known |
yabasicUbuntu:26.04:LTS |
All versions, plus listed versions 1:2.91.4-11:2.91.4-1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-19720 is a high vulnerability (CVSS 8.8) in Yabasic, published December 11, 2019. 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.