Jansi Library Flaw CVE-2026-8484 Disclosed
An unpatched heap buffer overflow in the unmaintained jansi JNI ioctl() wrapper can crash Java applications, with no fix expected.
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What to check
- Applies to
- The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
CERT Polska coordinated disclosure of CVE-2026-8484, a heap buffer overflow in the FuseSource jansi library's JNI ioctl() wrapper. The vulnerability stems from a missing size check on the argument array before invoking the native system call, leading to heap corruption and denial-of-service crashes in applications that embed the library.
Mentioned in this report
Source reporting: https://cert.pl/en/posts/2026/06/CVE-2026-8484
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