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CVE-2019-19720

28
FAUCET Score

CVE-2019-19720 describes a heap-based buffer overflow vulnerability in Yabasic 2.86.1, specifically within the yylex() function, which can be triggered by processing a specially crafted BASIC source file. This high-severity vulnerability (CVSS 8.8) allows for remote code execution with high impact on confidentiality, integrity, and availability, though it requires user interaction to exploit. Despite its severity, there is no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage, suggesting a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
2.86.1CPE matchmatch criteria
cpe:2.3:a:yabasic:yabasic:2.86.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 65th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / marcIhm/yabasic/issues/36
ExploitThird Party Advisory
yabasic.de / whatsnew.html
Release NotesVendor Advisory