Comparison Overview
Halstead Real Estate

Halstead Real Estate
499 Park Avenue, New York, 10022, US
Last Update: 30/03/2026
Halstead is the the largest privately owned residential real estate firm in the New York Metropolitan Area strives to lead in innovation and integrity. We are the Official Luxury Real Estate Firm of the New York Yankees as well as the Most Innovative Brokerage in the Le...

CoStar Group
1201 Wilson Blvd, Arlington, Virginia, US, 22209
Last Update: 01/04/2026
CoStar Group (NASDAQ: CSGP) is a global leader in commercial real estate information, analytics, online marketplaces, and 3D digital twin technology. Founded in 1986, CoStar Group is dedicated to digitizing the world’s real estate, empowering all people to discover prop...
Compliance Ranges Comparison

Halstead Real Estate







CoStar Group






Benchmark & Cyber Underwriting Signals
Incidents vs Real Estate Industry Avg (This Year)
No incidents recorded for Halstead Real Estate in 2026.
Incidents vs Real Estate Industry Avg (This Year)
No incidents recorded for CoStar Group in 2026.
Incident History - Halstead Real Estate (X = Date, Y = Severity)
Halstead Real Estate cyber incidents detection timeline including parent company and subsidiaries.
Incident History - CoStar Group (X = Date, Y = Severity)
CoStar Group cyber incidents detection timeline including parent company and subsidiaries.
Notable Incidents

Halstead Real Estate

CoStar Group
FAQ
Latest Global CVEs
An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an unauthenticated attacker to manipulate requests in a manner that bypasses authentication and associated audit logging controls.
In Ciena's Navigator Network Control Suite (NCS) and Manage Control Plan (MCP), there are hidden system accounts used for internal software operations. Some of these accounts have default passwords that may be predictable. While these accounts have very limited permissions on their own, an attacker could combine an attack using one of these accounts with other potential weaknesses to launch a more significant attack, possibly leading to escalation of privilege on the system.
Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the openhtj2k_decoder_impl::invoke, invoke_line_based, invoke_line_based_stream, and invoke_line_based_predecoded function in source/core/interface/decoder.cpp
Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the j2k_precinct_subband::parse_packet_header() in source/core/coding/coding_units.cpp
Incorrect access control in the /api/License/deactivateOffline endpoint of CAXPerts UniversalPlantViewer WebServices Server v2.7.6 allows authenticated attackers with low-level privileges to cause a Denial of Service (DoS) via removing the license from the webserver.