Buffer overflow in Yabasic

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.

Vulnerability class: Buffer Overflow

EPSS: 0.012 (66.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Yabasic — versions 2.86.1
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2019-19720?: CVE-2019-19720 is a high-severity vulnerability in Yabasic, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-12-11.
How severe is CVE-2019-19720?: High severity. CVSS v3 base score is 8.8 out of 10.