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Attackers broke into an organization's Oracle database through a SQL injection flaw in a public-facing web application, then installed a post-exploitation toolkit without writing an executable to disk. They fed Java source code to the database, let Oracle compile it into stored schema objects, and ran commands from inside the database engine. Huntress, which tracks the toolkit as khunt , investigated after credential-theft detections fired on July 27, 2026, and traced the chain to SYSTEM-level code execution on the underlying Windows server. The flaw sat in the application, where an autocomplete search field passed unvalidated input to the database over a Java Database Connectivity (JDBC) connection. The account behind that connection had enough privilege to create Java objects. No Oracle patch closes either the application flaw or the account privilege behind it. Finding the toolkit means hunting: search the Oracle installation for object names beginning Khunt, and SQL logs...

Security flaws in agent infrastructure from Amazon Web Services (AWS), Google, and Vercel let untrusted or forged instructions reach an agent's tools with no check that a model turn had authorized them. In several of the attack paths, the model never ran at all, so system prompts, content filters, and model-level guardrails never got a chance to intervene. The affected products include Amazon Bedrock AgentCore's InvokeHarness API, Google's Agent Development Kit (ADK) for Python, and the Vercel AI SDK harness packages for the Codex and OpenCode coding agents. AWS has fixed the managed service, Google addressed the issues in ADK 2.5.0, and Vercel patched @ai-sdk/harness-codex in version 1.0.29 and @ai-sdk/harness-opencode in version 1.0.28. These are not identical vulnerabilities and do not share the same attack conditions. AWS involved an authenticated remote request, Google's paths required attacker-controlled session events or user-authored function calls, and V...

Cybersecurity researchers have disclosed details of a "factory-shipped backdoor" implanted in at least 20 Chinese router models from Zbtlink. According to a new report from VulnCheck, the implant appears in all 21 firmware images currently available from Zbtlink that span more than 2 years. The backdoors are designed such that they start automatically and attempt to beacon to Chinese command-and-control (C2) infrastructure as often as every 35 seconds. They masquerade as a Linux kernel thread, but are actually userland processes running with root privileges while blending their true functionality with other legitimate kworker processes. The "phone home" implants have been codenamed ENDLESSDOORS . "ENDLESSDOORS, at its core, is a small tool called rctl (remote control linux)," Jacob Baines, VulnCheck Chief Technology Officer, said. "Uploaded to GitHub on January 14, 2015 and never touched again, this obscure repository implements a simple co...

A federal judge in Alexandria, Virginia, sentenced Maksim Silnikau to 16 years in prison on August 5 for creating and running Ransom Cartel , the ransomware-as-a-service operation he stood up in 2021. Between 2021 and 2023, Ransom Cartel conspirators attacked at least 18 companies, including firms in California, New York and Nebraska, and others abroad, according to the Justice Department. Silnikau, a 40-year-old Belarusian national who worked under the handles "J.P. Morgan," "lansky" and "xxx," did not carry out most of those intrusions himself. He built the business around them: the locking software, the stolen credentials he bought from initial access brokers, and a hidden panel where affiliates monitored attacks, negotiated with victims and split proceeds. He ran a ratings system that rewarded the productive ones, and pushed ransom payments through cryptocurrency mixers. Sixteen years run past the 13 years and seven months handed to Yaroslav ...

A newly patched security flaw impacting on-premise versions of JetBrains TeamCity has come under active exploitation in the wild , according to the U.S. Cybersecurity and Infrastructure Security Agency (CISA). The vulnerability in question is CVE-2026-63077 (CVSS score: 9.8), a case of deserialization of untrusted data that could allow an unauthenticated attacker with access to a TeamCity server to bypass authentication checks and execute arbitrary operating system commands with the privileges of the TeamCity server process. "JetBrains TeamCity contains a deserialization of untrusted data vulnerability that could allow unauthenticated remote code execution via the agent polling protocol," CISA said . According to JetBrains, the vulnerability can be exploited by an unauthenticated attacker via the TeamCity agent polling protocol to sidestep authentication checks and execute arbitrary operating system commands. The exact impact varies depending on the privileges grant...