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TI-2026-31176 Aliases CVE-2026-42996GHSA-j23g-7p7w-3f6j

Stack-based buffer overflow in JS8Call

Priority HIGH 82CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00571 47th percentileScored 2026-11-07
Fix Fixed JS8Call-improved (JS8Call-improved): 3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JS8CallJS8Callup to 2.3.1—No fix listedCNA
JS8Call-improvedJS8Call-improvedbefore 3.03.0Patch availableCNA
  • JS8Call VendorJS8Call Affected up to 2.3.1 Fixed in — No fix listed CNA
  • JS8Call-improved VendorJS8Call-improved Affected before 3.0 Fixed in 3.0 Patch available CNA

Remediation

  • Fix · CNA JS8Call-improved (JS8Call-improved) Fixed in 3.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42996
  2. 2026-10-03 Alias added: GHSA-j23g-7p7w-3f6j

References

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences