Critical Citrix Bug Exploited as a Zero-Day, 'Patching Is Not Enough'
The latest threat to Citrix NetScaler, CVE-2023-4966, was exploited as a zero-day bug for months before a patch was issued. Researchers expect exploitation efforts to surge.
Research examines attack methods, defenses, and vulnerabilities, helping security teams understand risks and improve protection.
Search across headline titles and summaries.
Background for this topic.
Research is the systematic study of technologies, systems, attack methods, vulnerabilities, and defensive techniques to establish evidence and produce new findings. In information security, it includes work such as discovering flaws in software or protocols, analyzing malware and attacker behavior, testing cryptographic designs, and evaluating security controls. News under this tag may describe a proof of concept, a measurement study, or a proposed technique rather than a confirmed real-world attack.
For practitioners, research can change how risks are prioritized and mitigated. A demonstrated vulnerability may require vulnerability-management teams to verify affected assets, apply fixes, or add compensating controls; responsible disclosure gives developers time to assess and remediate before technical details enable exploitation. Research involving live systems, personal data, or offensive tooling also raises privacy, authorization, dual-use, and ethical concerns. Sound findings should state their assumptions, scope, limitations, and reproducibility, since laboratory results do not automatically show that an attack is practical in every environment.
The latest threat to Citrix NetScaler, CVE-2023-4966, was exploited as a zero-day bug for months before a patch was issued. Researchers expect exploitation efforts to surge.
A critical vulnerability tracked as CVE-2023-4966 in Citrix NetScaler ADC/Gateway devices has been actively exploited as a zero-day since late August, security researchers announced. [...]