The TIBCO Administrator server component of TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition, and TIBCO Administrator - Enterprise Edition for z/Linux contains vulnerabilities wherein a malicious user could perform XML external entity expansion (XXE) attacks to disclose host machine information. Affected releases are TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition: versions up to and including 5.10.0, and TIBCO Administrator - Enterprise Edition for z/Linux: versions up to and including 5.9.1.