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rpc.mountd in SGI IRIX 6.5.25, 6.5.26, and 6.5.27 does not correctly allow access to anonymous clients that connect from a system whose hostname can not be determined. NOTE: while this issue occurs in a security mechanism, there is no apparent attacker role and probably does not satisfy the CVE definition of a vulnerability.
Use CWE-17, Sgi vendor hub and Irix product page to widen CVE-2005-0138 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2010-1039, CVE-2004-0139 and CVE-2007-4938 for nearby disclosures in the same product family.