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CVE-2026-8484

Heap buffer overflow in Jansi

MEDIUM
4.8
CVSS Score
Published: June 16, 2026 at 10:32 AM UTC
Updated: October 26, 2026 at 11:10 AM UTC
1 product affected across 1 vendorJansi

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

A heap buffer overflow vulnerability exists in the Jansi JNI "ioctl()" wrapper due to a lack of size verification for the argument array before the system call. This can lead to heap corruption and application crashes (DoS). All versions are believed to be vulnerable. This project is unmaintained at the time of CVE assignment.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Jansi· Fusesourcemaven
90%
v ≤ 2.4.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory
Source: cverecord
https://cert.pl/en/posts/2026/06/CVE-2026-8484
Product
Source: cverecord
https://github.com/fusesource/jansi/tree/master

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMCERT-PL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-122

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