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CERT-FR Flags Oracle GraalVM/Java SE Flaws

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CERT-FR advisory details multiple Oracle GraalVM vulnerabilities enabling remote code execution and denial of service.

Sourcecert.ssi.gouv.fr — open the original

What to check

Applies to
The 3 CVEs 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-FR issued an advisory covering multiple vulnerabilities in Oracle Java SE, specifically affecting Oracle GraalVM Enterprise Edition and Oracle GraalVM for JDK 17, JDK 21, and standalone GraalVM 25.x releases. The flaws allow an attacker to achieve remote arbitrary code execution or trigger a remote denial of service condition, though the advisory does not detail specific attack vectors or confirm active exploitation.

Three CVEs are referenced (CVE-2026-83357, CVE-2026-83368, CVE-2026-83408), tracked under Oracle's September 2026 Critical Patch Update bulletin (cspusep2026). No indicators of compromise or exploitation in the wild are mentioned. Affected organizations running the listed GraalVM versions should apply Oracle's official patches referenced in the CPU bulletin as soon as possible, prioritizing systems exposed to untrusted input given the RCE potential.

Mentioned in this report

Vulnerabilities CVE-2026-83357CVE-2026-83368CVE-2026-83408

Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1185

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