A 0-Day is a software vulnerability without an available fix, creating risk because defenders have limited time to mitigate exploitation.
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Background for this topic.
0-Day describes a software vulnerability unknown to the software maker or unpatched when first exploited. Attackers can use these flaws immediately, as no official fix or signature exists to block the exploit. Such vulnerabilities often affect widely deployed software or hardware, making them valuable for targeted attacks or widespread campaigns.
Because defenders lack patches or reliable detection signatures initially, they must rely on anomaly detection, network monitoring, and threat intelligence to identify suspicious activity linked to 0-day exploits. Rapid patching once a fix is released is critical to reduce exposure. Tracking emerging 0-day threats helps prioritize defensive measures and informs risk management decisions in environments where unpatched vulnerabilities pose significant security risks.
A major bug in Oracle's ERP software disproportionately affected American universities, and hackers have capitalized by stealing gobs of data.
Oracle still hasn't patched the vulnerability the group has been using in its attacks since late May. The post ShinyHunters is actively extorting universities after exploiting an unpatched Oracle flaw appeared first on CyberScoop.
ShinyHunters exploited a critical Oracle PeopleSoft zero-day to breach over 100 organizations, mostly universities, before a patch was available. Mandiant and Google’s Threat Intelligence Group published an analysis of an active ShinyHunters campaign on June 11, one day after Oracle finally issued an advisory for the vulnerability being exploited. The gap matters: the activity ran […]
The ShinyHunters extortion crew exploited an unpatched flaw in Oracle PeopleSoft to break into enterprise systems, steal data, and demand payment to keep it private. The campaign hit universities hardest
Oracle is warning about a critical PeopleSoft Suite zero-day vulnerability tracked as CVE-2026-35273 that allows unauthenticated remote code execution, with the flaw actively exploited in ShinyHunter data theft attacks. [...]
University of Nottingham is first of many, Shiny tells The Reg
Another day, another Windows exploit code
GreatXML bypasses BitLocker via Defender offline scan artifacts, giving SYSTEM shell in Recovery Mode. No patch exists. Any machine that ran an offline scan is vulnerable. On June 10, security researcher Chaotic Eclipse (aka Nightmare Eclipse) published a new working exploit dubbed GreatXML that bypasses BitLocker and opens a command shell with full SYSTEM privileges […]
Revenge is a dish best served code
Microsoft has patched an actively exploited Exchange Server vulnerability that allows threat actors to execute arbitrary JavaScript code in cross-site scripting (XSS) attacks targeting Outlook Web Access users. [...]
On Tuesday, Microsoft patched two zero-day vulnerabilities that let attackers gain SYSTEM privileges on fully patched Windows systems, and a third one that grants access to BitLocker-protected drives. [...]
The researcher Chaotic Eclipse released a PoC for the RoguePlanet Microsoft Defender zero-day, which can grant SYSTEM privileges on fully patched Windows systems. Security researcher Chaotic Eclipse, also known as Nightmare-Eclipse, has published a new proof-of-concept exploit for a RoguePlanet Microsoft Defender zero-day. The flaw relies on a race condition that can provide attackers with […]
The anonymous security researcher going by the name Chaotic Eclipse (aka Nightmare-Eclipse) has released a proof-of-concept (PoC) exploit for yet another Microsoft Defender zero-day named RoguePlanet
A security researcher has released a new Microsoft Defender zero-day exploit named "RoguePlanet" just hours after Microsoft fixed two previously disclosed flaws during June 2026 Patch Tuesday. [...]
Microsoft Patch Tuesday security updates for June 2026 fix a record 208 CVEs, including one actively exploited zero-day and multiple critical RCE flaws. Microsoft Patch Tuesday security updates for June 2026 mark a record. Microsoft shipped fixes for 208 CVEs across Windows, Office, Azure, Exchange, Hyper-V, Secure Boot, BitLocker, and a range of AI tooling. […]
Today is Microsoft's June 2026 Patch Tuesday, with security updates for 200 flaws, including five publicly disclosed zero-day vulnerabilities and one actively exploited in attacks. [...]
Today is Microsoft's June 2026 Patch Tuesday, with security updates for 200 flaws and five publicly disclosed zero-day vulnerabilities. [...]
The defect marks the seventh actively exploited zero-day in Cisco SD-WANs this year, and the vendor has yet to release a patch. The post Cisco customers encounter another SD-WAN zero-day under attack appeared first on CyberScoop.
Google paid researcher a tidy $55K bounty for its discovery
Google has released security updates to address 74 vulnerabilities, including one that has come under active exploitation in the wild