The TLS protocol 1.2 and earlier supports the rsa_fixed_dh, dss_fixed_dh, rsa_fixed_ecdh, and ecdsa_fixed_ecdh values for ClientCertificateType but does not directly document the ability to compute the master secret in certain situations with a client secret key and server public key but not a server secret key, which makes it easier for man-in-the-middle attackers to spoof TLS servers by leveraging knowledge of the secret key for an arbitrary installed client X.509 certificate, aka the "Key Compromise Impersonation (KCI)" issue.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.1, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 18 products from ietf, from apple, from google and 15 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2016-09-21T02:59:00.133
2025-04-12T10:46:40.837
Deferred
CVSSv3.1: 8.1 (HIGH)
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | ietf | transport_layer_security | ≤ 1.2 | Yes |
| Application | apple | safari | - | No |
| Application | chrome | - | No | |
| Application | microsoft | internet_explorer | - | No |
| Application | mozilla | firefox | - | No |
| Application | opera | opera_browser | - | No |
| Application | netapp | clustered_data_ontap_antivirus_connector | - | Yes |
| Application | netapp | data_ontap_edge | - | Yes |
| Application | netapp | host_agent | - | Yes |
| Application | netapp | oncommand_shift | - | Yes |
| Application | netapp | plug-in_for_symantec_netbackup | - | Yes |
| Application | netapp | smi-s_provider | - | Yes |
| Application | netapp | snap_creator_framework | - | Yes |
| Application | netapp | snapdrive | - | Yes |
| Application | netapp | snapdrive | - | Yes |
| Application | netapp | snapmanager | - | Yes |
| Application | netapp | snapmanager | - | Yes |
| Application | netapp | snapprotect | - | Yes |
| Application | netapp | solidfire_\&_hci_management_node | - | Yes |
| Application | netapp | system_setup | - | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For ietf's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.