19 Apr, 2026

QNAP warns of critical ASP.NET flaw in its Windows backup software

QNAP warned customers to patch a critical ASP.NET Core vulnerability that also impacts the company’s NetBak PC Agent, a Windows utility for backing up data to a QNAP network-attached storage (NAS) device. Tracked as CVE-2025-55315, this security bypass flaw was found in the Kestrel ASP.NET Core web server and enables attackers with low privileges to hijack […]

2 mins read

Microsoft now pays up to $40,000 for some .NET vulnerabilities

Microsoft has expanded its .NET bug bounty program and increased rewards to $40,000 for some .NET and ASP.NET Core vulnerabilities. Madeline Eckert, a senior program manager for Researcher Incentives and Bounty at Microsoft, stated that these changes aim to more accurately reflect the complexity involved in discovering and exploiting .NET vulnerabilities. “We’re excited to announce […]

2 mins read

Microsoft says attackers use exposed ASP.NET keys to deploy malware

Microsoft warns that attackers are deploying malware in ViewState code injection attacks using static ASP. NET machine keys found online. As Microsoft Threat Intelligence experts recently discovered, some developers use ASP.NET validationKey and decryptionKey keys (designed to protect ViewState from tampering and information disclosure) found on code documentation and repository platforms in their own software. […]

3 mins read