Stay updated on the latest in information security flaws. Explore news, insights, and analysis on vulnerabilities affecting digital safety.
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Background for this topic.
A flaw is a defect in software, hardware, system design, or configuration that causes unintended behavior. In security reporting, the term usually means a weakness that could violate confidentiality, integrity, or availability when reached through a particular interface, input, privilege, or operating condition. Not every flaw is exploitable, and exploitability depends on factors such as exposure, authentication requirements, affected versions, and available mitigations.
Flaws matter because they can create attack paths in applications, operating systems, devices, APIs, or administrative settings. Security teams assess their severity and exposure, prioritize remediation, apply patches or configuration changes, and use isolation or access controls when immediate fixes are unavailable. Code review, testing, vulnerability scanning, and monitoring can reveal flaws across the development and operational lifecycle. Reports should distinguish a confirmed vulnerability from a theoretical defect and provide enough technical detail to support validation without unnecessarily enabling exploitation.
Newly disclosed vulnerability already being abused, users urged to lock down exposed firewalls WatchGuard is in emergency patch mode after confirming that a critical remote code execution flaw in its Firebox firewalls is under active attack.…
The UEFI firmware implementation in some motherboards from ASUS, Gigabyte, MSI, and ASRock is vulnerable to direct memory access (DMA) attacks that can bypass early-boot memory protections. [...]
WatchGuard has released fixes to address a critical security flaw in Fireware OS that it said has been exploited in real-world attacks
WatchGuard has warned customers to patch a critical, actively exploited remote code execution (RCE) vulnerability in its Firebox firewalls. [...]
Certain motherboard models from vendors like ASRock, ASUSTeK Computer, GIGABYTE, and MSI are affected by a security vulnerability that leaves them susceptible to early-boot direct memory access (DMA) attacks across architectures that implement a Unified Extensible Firmware Interface (UEFI) and input–output memory management unit (IOMMU)
Cisco Talos Attributes Campaign to UAT-9686Likely Chinese nation-state hackers are exploiting an unpatched flaw in Cisco email appliances as part of an ongoing campaign to gain persistent access. Hackers have been exploiting since mid-November a zero-day in the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager.
Also: Texas AG Sues Smart TV Manufacturers, Fortinet SSO FlawsThis week, a leadership shakeup at Coupang, attackers exploited critical Fortinet SSO flaws, Pornhub data hacked, Texas Attorney General Ken Paxton sued smart TV makers, auto finance provider 700Credit disclosed a breach affecting millions, A revived pro-Russia ransomware operation stumbled.
In the latest attacks against the vendor's SMA1000 devices, threat actors have chained a new zero-day flaw with a critical vulnerability disclosed earlier this year.
Hewlett Packard Enterprise (HPE) has resolved a maximum-severity security flaw in OneView Software that, if successfully exploited, could result in remote code execution
Flaw in remote-access appliance lets attackers chain bugs for root-level takeover SonicWall has warned customers of a zero-day flaw in its SMA 1000 remote-access appliance that's being actively exploited, potentially allowing attackers to escalate privileges and take over boxes.…
Security boffins warn flaw is now being used for ransomware attacks against live networks Microsoft says attackers have already compromised "several hundred machines across a diverse set of organizations" via the React2Shell flaw, using the access to execute code, deploy malware, and, in some cases, deliver ransomware.…
Hewlett Packard Enterprise (HPE) has patched a maximum-severity vulnerability in its HPE OneView software that enables attackers to execute arbitrary code remotely. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a critical flaw impacting ASUS Live Update to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation
Cisco has alerted users of a maximum-severity zero-day flaw in Cisco AsyncOS software that has been actively exploited by a China-nexus advanced persistent threat (APT) actor codenamed UAT-9686 in attacks targeting Cisco Secure Email Gateway and Cisco Secure Email and Web Manager
Attackers targeted admin accounts, and once authenticated, exported device configurations including hashed credentials and other sensitive information.
Security Needs to Document Risks and Push Back Against Retroactive AccountabilityA recent CISO resignation letter exposes a structural flaw in how organizations manage cyber risk. It shows what happens when risk is accepted quietly and accountability is enforced retroactively, and it's a cautionary tale about why CISOs need to actively manage their careers.
SonicWall has rolled out fixes to address a security flaw in Secure Mobile Access (SMA) 100 series appliances that it said has been actively exploited in the wild
A critical flaw in the Motors WordPress theme affecting more than 20,000 installations allows low-privileged users to gain full control of websites
A ransomware gang exploited the critical React2Shell vulnerability (CVE-2025-55182) to gain initial access to corporate networks and deployed the file-encrypting malware less than a minute later. [...]
A flaw in JumpCloud Remote Assist for Windows has exposed managed endpoints to local privilege escalation and denial-of-service attacks