The version of AOS installed on the remote host is prior to 7.3.1.14. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-7.3.1.14 advisory.

  - A flaw was found in gnutls. Servers configured with RSA-PSK (RivestShamirAdleman  Pre-Shared Key)     wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could     exploit this by sending a specially crafted username, leading to an authentication bypass. This     vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
    (CVE-2026-42010)

  - A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset,     leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is     remotely exploitable and may cause information disclosure or denial of service. (CVE-2026-33845)

  - A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The     issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based     solely on handshake type, without validating that the message_length field remains consistent across all     fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with     conflicting message_length values, causing the implementation to allocate a buffer based on a smaller     initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because     the merge operation does not enforce proper bounds checking against the allocated buffer size, this     results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without     authentication via the DTLS handshake path and can lead to application crashes or potential memory     corruption. (CVE-2026-33846)

  - A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons     of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within     `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf     certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass     where a certificate that should be rejected is instead accepted. This could result in unauthorized access     or information disclosure. (CVE-2026-3833)

  - A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer     Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by     sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to     unstable packet ordering or undefined behavior, resulting in a denial of service. (CVE-2026-42009)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-7.3.1.14)

critical Nessus Plugin ID 335154

Version 1.2