CVE-2021-46483

FAUCET Score

CVE-2021-46483 is a high-severity heap buffer overflow vulnerability affecting Jsish v3.5.0, specifically within the BooleanConstructor function in src/jsiBool.c. This vulnerability has a CVSS score of 7.8, indicating a high potential for impact on confidentiality, integrity, and availability, and can be exploited locally with low attack complexity, requiring user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		3.5.0CPE matchmatch criteria	cpe:2.3:a:jsish:jsish:3.5.0:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.84%

Probability of exploitation in next 30 days

EPSS Percentile

54.1%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0084 is in the 51st percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference

View patch

References

github.com / pcmacdon/jsish/issues/62

ExploitPatchThird Party Advisory