Vulnerability Analysis

CVE-2026-42996

JS8Call through 2.3.1 and JS8Call-improved before 3.0 have a stack-based buffer overflow via a radio transmission of @APRSIS GRID followed by a long Maidenhead locator. This occurs in grid2deg in APRSISClient.cpp.

No Active Exploit Signals

CVSS Base Score

10.0

CRITICAL

Exploitability:-

Impact Score:-

Temporal Score:-

EPSS:0.48%

Threat Intelligence Signals

CISA KEV

KEV Date Added

—

Ransomware Use

—

KEV Due Date

—

VulnCheck In-the-Wild

Nuclei Template

EPSS Score

0.479%

EPSS Percentile

37.6th pct

GHSA ID

GHSA-j23g-7p7w-3f6j ↗

GitHub Severity

CRITICAL

SSVC Exploitation

—

SSVC Automatable

—

Vulnerability Class

—

CVSS Vector Details

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality

Integrity

Availability

Identity & Timeline

Status	-
Assigning Authority	-
CVSS Version / Source	-
Reserved	-
Published	-
Patch Date (date_public)	-
Exploit DB Date	-
First GitHub PoC Date	-
Last Updated	-
Time to Patch (Days to fix)	-
Exploit Release Gap	-
PoC Release Gap	-
Exploit DB References	None identified

Weaknesses (CWE)

CISA SSVC Prioritization

MITRE ATT&CK Mapping

Tactics

Techniques

Exploitation & Remediation

Affected Products & Versions

Vendor	Product	Affected Versions
No affected products specified.

References

NVD Listing ↗ MITRE Listing ↗

No reference links found.