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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.
The pro-Russia hacktivist group CyberVolk launched a ransomware-as-a-service (RaaS) called VolkLocker that suffered from serious implementation flaws, allowing victims to potentially decrypt files for free. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added a high-severity flaw impacting Sierra Wireless AirLink ALEOS routers to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation in the wild
Apple on Friday released security updates for iOS, iPadOS, macOS, tvOS, watchOS, visionOS, and its Safari web browser to address two security flaws that it said have been exploited in the wild, one of which is the same flaw that was patched by Google in Chrome earlier this week
Apple has released emergency updates to patch two zero-day vulnerabilities that were exploited in an "extremely sophisticated attack" targeting specific individuals. [...]
And the earlier React2Shell patch is vulnerable If you're running React Server Components, you just can't catch a break. In addition to already-reported flaws, newly discovered bugs allow attackers to hang vulnerable servers and potentially leak Server Function source code, so anyone using RSC or frameworks that support it should patch quickly.…
Wiz says React2Shell attacks accelerating, ranging from cryptominers to state-linked crews Half of the internet-facing systems vulnerable to a fast-moving React remote code execution flaw remain unpatched, even as exploitation has exploded into more than a dozen active attack clusters ranging from bargain-basement cryptominers to state-linked intrusion tooling.…
Free unofficial patches are available for a new Windows zero-day vulnerability that allows attackers to crash the Remote Access Connection Manager (RasMan) service. [...]
CISA has ordered U.S. federal agencies to patch a critical GeoServer vulnerability now actively exploited in XML External Entity (XXE) injection attacks. [...]
The React team has released fixes for two new types of flaws in React Server Components (RSC) that, if successfully exploited, could result in denial-of-service (DoS) or source code exposure
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a high-severity security flaw impacting OSGeo GeoServer to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation in the wild
Hackers are exploiting a new, undocumented vulnerability in the implementation of the cryptographic algorithm present in Gladinet's CentreStack and Triofox products for secure remote file access and sharing. [...]
Notepad++ version 8.8.9 was released to fix a security weakness in its WinGUp update tool after researchers and users reported incidents in which the updater retrieved malicious executables instead of legitimate update packages. [...]
Wiz disclosed a still-unpatched vulnerability in self-hosted Git service Gogs, which is a bypass for a previous RCE bug disclosed last year.
Unpatched Flaw in Open-Source Gogs Service Facilitates Remote Code ExecutionAn attacker has been exploiting a zero-day vulnerability in Gogs, an open-source and popular Git service that allows for self-hosting, warned researchers. At least 700 internet-exposed servers running Gogs shows signs of being infected with command-and-control malware; no patch is yet available.
Microsoft now pays security researchers for finding critical vulnerabilities in any of its online services, regardless of whether the code was written by Microsoft or a third party. [...]
A high-severity unpatched security vulnerability in Gogs has come under active exploitation, with more than 700 compromised instances accessible over the internet, according to new findings from Wiz
Google has released a Chrome security update to fix three zero-day vulnerabilities, including a high-severity flaw with an active exploit
Google has released emergency updates to fix another Chrome zero-day vulnerability exploited in the wild, marking the eighth such security flaw patched since the start of the year. [...]
Google on Wednesday shipped security updates for its Chrome browser to address three security flaws, including one it said has come under active exploitation in the wild
React2Shell continues to witness heavy exploitation, with threat actors leveraging the maximum-severity security flaw in React Server Components (RSC) to deliver cryptocurrency miners and an array of previously undocumented malware families, according to new findings from Huntress