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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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-8484 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-8484

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-8484 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-8484

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.