PatchSiren cyber security CVE debrief
CVE-2026-8484 FuseSource CVE debrief
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.
- Vendor
- FuseSource
- Product
- jansi
- CVSS
- MEDIUM 4.8
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-16
- Original CVE updated
- 2026-06-16
- Advisory published
- 2026-06-16
- Advisory updated
- 2026-06-16
Who should care
Users of the Jansi JNI library should be aware of this vulnerability and take necessary precautions to mitigate the risk.
Technical summary
The vulnerability is caused by a lack of size verification for the argument array before the system call in the Jansi JNI ioctl() wrapper. This can lead to a heap buffer overflow, resulting in heap corruption and application crashes (DoS).
Defensive priority
MEDIUM
Recommended defensive actions
- Apply patches or updates as soon as they become available.
- Consider using alternative libraries or workarounds until a patch is released.
- Monitor the project's GitHub page for updates: resourceLinkAnnotations: [ref-5]
Evidence notes
The CVE record was published on 2026-06-16T12:16:26.730Z and has not been modified since. The vulnerability has a CVSS score of 4.8 and is classified as MEDIUM severity. The CWE associated with this vulnerability is CWE-122.
Official resources
CVE-2026-8484 was published on 2026-06-16T12:16:26.730Z.