Vulnerabilities are flaws attackers can exploit to access systems or data; timely patching, isolation, and least privilege reduce the impact.
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Background for this topic.
A vulnerability is a weakness in a system’s design, code, configuration, or operating process that could allow an attacker to violate a security requirement. It may affect software, hardware, networks, cloud services, or exposed interfaces, and is not automatically exploitable: practical risk depends on factors such as exposure, required privileges, available attack paths, and existing controls. Outcomes can include unauthorized access, information disclosure, code execution, or disruption of service.
Effective vulnerability management combines accurate asset inventory with code review, security testing, scanning, and trusted vulnerability intelligence. Organizations should prioritize weaknesses affecting reachable, business-critical systems—especially when exploitation is known or requires little access—then patch or otherwise mitigate them and verify the fix. Where patching is delayed, controls such as disabling an exposed feature, restricting network access, or strengthening authentication can reduce the attack surface. Records should preserve affected versions, risk decisions, remediation owners, and validation results.
A critical security vulnerability in Microsoft SharePoint Server has been weaponized as part of an "active, large-scale" exploitation campaign
A newly disclosed critical security flaw in CrushFTP has come under active exploitation in the wild. Assigned the CVE identifier CVE-2025-54309, the vulnerability carries a CVSS score of 9.0
CrushFTP is warning that threat actors are actively exploiting a zero-day vulnerability tracked as CVE-2025-54309, which allows attackers to gain administrative access via the web interface on vulnerable servers. [...]
CrushFTP is warning that threat actors are actively exploiting a zero-day vulnerability tracked as CVE-2025-54309, which allows attackers to gain administrative access via the web interface on vulnerable servers. [...]
Also: Train Hack Risks Outed by CISA Alert; AI Comprehension Issues Won't Go AwayIn this week's update, four ISMG editors discussed the potential global implications of the Seychelles Commercial Bank data breach; the real-world threat of train hacks following an alert about a critical railway vulnerability; and growing concerns around AI's "comprehension problem."
Multiple US Government Agencies Have Used the Now-Patched Message Archiving AppAttackers are actively attempting to exploit a vulnerability that exists in older versions of the Signal message app clone TeleMessage TM SGNL, built by Smarsh to keep copies of all communications, including the ability to comply with federal record-keeping requirements.
The US CISA has issued advisories for Industrial Control Systems vulnerabilities affecting multiple vendors including Johnson Controls, ABB, Hitachi Energy, and Schneider Electric
Researchers are seeing exploitation attempts for the CVE-2025-48927 vulnerability in the TeleMessage SGNL app, which allows retrieving usernames, passwords, and other sensitive data. [...]
Four flaws in the basic software for Gigabyte motherboards could allow persistent implants, underscoring problems in the ways firmware is developed and updated.
Cybersecurity researchers have disclosed a critical container escape vulnerability in the NVIDIA Container Toolkit that could pose a severe threat to managed AI cloud services
A critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed "CitrixBleed 2," was actively exploited nearly two weeks before proof-of-concept (PoC) exploits were made public, despite Citrix stating that there was no evidence of attacks. [...]
VMware fixed four vulnerabilities in VMware ESXi, Workstation, Fusion, and Tools that were exploited as zero-days during the Pwn2Own Berlin 2025 hacking contest in May 2025. [...]
Also: CISA Warns of Unpatched Train Brake VulnerabilityThis week: Louis Vuitton and Co-op confirm breaches, unpatched train brake flaw, Barclays fined £42M pounds for financial crime failures, secret U.K. program relocated thousands of Afghans, ex-soldier pleads guilty to hacking, Ukrainian hackers claim hit on Russian drone supplier.
A critical vulnerability (CVE-2025-20337) in Cisco's Identity Services Engine (ISE) could be exploited to let an unauthenticated attacker store malicious files, execute arbitrary code, or gain root privileges on vulnerable devices. [...]
Cybersecurity researchers have discovered a new campaign that exploits a known security flaw impacting Apache HTTP Server to deliver a cryptocurrency miner called Linuxsys
The modern-day threat landscape requires enterprise security teams to think and act beyond traditional cybersecurity measures that are purely passive and reactive, and in most cases, ineffective against emerging threats and sophisticated threat actors. Prioritizing cybersecurity means implementing more proactive, adaptive, and actionable measures that can work together to effectively address the
Cisco has disclosed a new maximum-severity security vulnerability impacting Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) that could permit an attacker to execute arbitrary code on the underlying operating system with elevated privileges
Agency to Collaborate with External Experts on Vulnerability ResearchThe U.K. NCSC will collaborate with industry experts for vulnerability detection and mitigation as part of its latest Vulnerability Research Initiative. The announcement comes on the heels of funding concerns for the U.S. government-based Common Vulnerabilities and Exposures program.
Former Inspector Reviews Sector's Take on AI, Zero Trust, Vulnerability ManagementSecuring U.S. nuclear infrastructure remains a hot-button topic, especially because it remains an attractive cyberattack target for nation-state adversaries. Former regulatory inspector Mark Rorabaugh, president of InfraShield, details the current state of the sector's cybersecurity posture.