All news in category “Security Advisory and Patch Watch”

🛡️ Two malicious Visual Studio Code extensions on Microsoft's Marketplace, Bitcoin Black and Codo AI, were found delivering an information-stealing payload that can capture screenshots, harvest credentials and crypto wallets, and hijack browser sessions. Published under the developer name 'BigBlack', Codo AI remained live with under 30 downloads at the time of reporting while Bitcoin Black showed a single install. Researchers at Koi Security observed that Bitcoin Black uses a wildcard activation and executes PowerShell or a hidden batch script to download a DLL and executable that leverage DLL hijacking to run the infostealer as 'runtime.exe'.

⚠️ Apache Tika maintainers warn that an XML External Entity (XXE) vulnerability originally disclosed in August (CVE-2025-54988) is broader than first reported and is now covered by a superset CVE (CVE-2025-66516). The issue affects tika-core, tika-parsers and the standalone tika-parser-pdf-module, and could allow attackers to read sensitive data or trigger requests to internal resources. Users are advised to upgrade to the patched releases or disable XML parsing via tika-config.xml to mitigate risk.

🔔 CISA added two vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog: CVE-2022-37055, a buffer overflow affecting D-Link routers, and CVE-2025-66644, an OS command injection in Array Networks ArrayOS AG. Both were included based on evidence of active exploitation. Under BOD 22-01, Federal Civilian Executive Branch agencies are required to remediate KEV entries by their due dates, and CISA urges all organizations to prioritize timely remediation and risk-reduction measures.

🔴 The newly disclosed React2Shell vulnerability (CVE-2025-55182) is being actively exploited in the wild and carries a CVSS v3.1 score of 10. AWS has attributed exploitation attempts to state-linked groups including Earth Lamia and Jackpot Panda, while multiple proof-of-concept exploits have rapidly appeared. Broad scans from Shadowserver and Censys show tens of thousands to over two million potentially affected instances, and defenders are urged to apply the published React security updates immediately.

🔴 React2Shell (CVE-2025-55182) is an unauthenticated remote code execution flaw in React Server Components and frameworks like Next.js, disclosed on December 3, 2025. A public proof-of-concept on December 4 accelerated automated scanning and exploitation; Shadowserver found 77,664 vulnerable IPs (≈23,700 in the US), and Palo Alto reports more than 30 breached organizations. Observed attacks use PowerShell stages, AMSI bypass and Cobalt Strike; mitigation requires updating React, rebuilding and redeploying apps, and reviewing logs for post-exploitation indicators.

⚠️Researchers disclosed more than 30 vulnerabilities in AI-integrated IDEs in a report dubbed IDEsaster by Ari Marzouk (MaccariTA). The issues chain prompt-injection with auto-approved agent tooling and legitimate IDE features to achieve data exfiltration and remote code execution across products like Cursor, GitHub Copilot, Zed.dev, and others. Of the findings, 24 received CVE identifiers; exploit examples include workspace writes that cause outbound requests, settings hijacks that point executable paths to attacker binaries, and multi-root overrides that trigger execution. Researchers advise using AI agents only with trusted projects, applying least privilege to tool access, hardening prompts, and sandboxing risky operations.

⚠️ CISA has added a critical remote code execution flaw affecting React Server Components (tracked as CVE-2025-55182 / React2Shell) to its Known Exploited Vulnerabilities catalog. The vulnerability, rated CVSS 10.0, stems from insecure deserialization in React’s Flight protocol and enables unauthenticated attackers to run arbitrary commands via crafted HTTP requests. Fixes are available in react-server-dom-webpack, react-server-dom-parcel, and react-server-dom-turbopack (versions 19.0.1, 19.1.2, 19.2.1) and should be applied immediately.

⚠️ Patches for the React2Shell vulnerability should be prioritized: researchers report active, largely automated exploitation attempts targeting React Server Components and Next.js. Public proof-of-concept code has been reused by attackers, with initial payloads performing lightweight proof-of-execution checks and staged PowerShell download-and-execute stagers. Vendors including JFrog, Wiz and Greynoise warn of fake PoCs on GitHub, cryptojacking, credential theft attempts, and Mirai-style kit integration, while AWS reports state-linked groups targeting exposed apps — making immediate remediation and verification essential.

🛡️ In early December 2025 the React project disclosed a critical server-side vulnerability dubbed React2Shell (CVE-2025-55182) rated CVSS 10.0. The bug allows unauthenticated attackers to execute arbitrary code by sending a specially crafted request to a vulnerable server feature. Check Point notes that CloudGuard WAF customers were proactively protected and not affected. Organizations should patch promptly and review traffic controls.

🔒 A critical XML External Entity (XXE) vulnerability, tracked as CVE-2025-66516, has been disclosed in Apache Tika and carries a CVSS score of 10.0. The flaw allows XXE via a crafted XFA file inside PDFs and affects tika-core, tika-parser-pdf-module, and tika-parsers across multiple versions. Users are strongly advised to upgrade to the patched releases immediately to mitigate file disclosure and potential remote code execution.

⚠️React.js and Next.js servers are vulnerable to a critical remote code execution flaw dubbed React2Shell (CVE-2025-55182), disclosed to Meta on 29 November 2025. The bug targets server-side React Server Function endpoints and default Next.js App Router setups, enabling unauthenticated attackers to execute arbitrary code with a single HTTP request. Researchers report near‑100% exploitability in default configurations and published proof‑of‑concepts; security teams should upgrade affected packages to the fixed versions immediately and verify PoC sources before testing.

🔧 Cloudflare says an emergency patch to mitigate the critical React2Shell vulnerability (CVE-2025-55182) introduced a change to its Web Application Firewall request parsing that briefly rendered the network unavailable and caused global "500 Internal Server Error" responses. The update targeted active remote code execution attempts against React Server Components and dependent frameworks. Cloudflare emphasized the incident was not an attack and that the change was deployed to protect customers while the industry addresses the flaw.

⚠️ CISA added CVE-2025-55182, a remote code execution vulnerability in Meta React Server Components, to the Known Exploited Vulnerabilities (KEV) Catalog after observing active exploitation. This type of RCE is a common and serious attack vector that poses significant risk to federal networks and other organizations. Under BOD 22-01, Federal Civilian Executive Branch agencies must remediate KEV entries by their due dates. CISA strongly urges all organizations to prioritize timely remediation and vulnerability management to reduce exposure.

⚠️React2Shell is a max-severity insecure deserialization vulnerability in the React Server Components 'Flight' protocol that allows unauthenticated remote execution of JavaScript on affected servers. Within hours of disclosure, AWS telemetry observed exploitation attempts by China-linked groups including Earth Lamia and Jackpot Panda, and multiple proof-of-concept exploits have been published. React and Next.js have released patches; administrators should apply updates, scan for vulnerable deployments, and monitor for known exploitation indicators.

🛡️ Cloudflare briefly disrupted service after a Web Application Firewall update intended to mitigate a vulnerability in React Server Components (CVE-2025-55182) caused its request parser to fail. The incident began at 09:09 UTC and a corrective change was deployed within ten minutes, but monitoring sites and customers reported widespread errors during the outage. Downdetector logged spikes for enterprise and consumer services including Shopify, Zoom, Claude AI, and AWS. Cloudflare said the change was a protective measure for unpatched customers and confirmed the disruption was not an attack.

⚠️ JPCERT/CC warns that a command injection flaw in Array Networks AG Series secure access gateways' DesktopDirect feature has been actively exploited since August 2025, enabling attackers to execute arbitrary commands. The vendor patched the issue in ArrayOS 9.4.5.9 on May 11, 2025; affected versions include 9.4.5.8 and earlier. JPCERT/CC confirms web shells were dropped on devices in Japan and notes attacks from IP 194.233.100[.]138. Administrators should apply the update or disable DesktopDirect and block URLs containing a semicolon as a temporary mitigation.

🛡️ Amazon observed multiple China state-nexus groups rapidly exploiting CVE-2025-55182 (React2Shell), a critical unsafe deserialization flaw in React Server Components with a CVSS score of 10.0 that affects React 19.x and Next.js 15.x/16.x when using App Router. AWS deployed Sonaris active defense, AWS WAF managed rules (AWSManagedRulesKnownBadInputsRuleSet v1.24+) and MadPot honeypots to detect and block attempts, but these protections are not substitutes for patching. Customers running self-managed React/Next.js applications must update immediately, deploy interim WAF rules, and review logs for indicators such as POST requests with next-action or rsc-action-id headers.

🔒 Threat actors are exploiting a command injection vulnerability in Array Networks ArrayOS AG VPN appliances to plant PHP webshells and create rogue user accounts. The flaw affects ArrayOS AG 9.4.5.8 and earlier when the DesktopDirect feature is enabled; Array issued a May update (9.4.5.9) to address the issue. Japan's CERT (JPCERT/CC) reports attacks since at least August originating from IP 194.233.100[.]138. If immediate patching is not possible, disable DesktopDirect or block URLs containing a semicolon as a temporary mitigation.

🚨 Researchers disclosed critical remote code execution vulnerabilities in the Flight protocol for React Server Components (CVE-2025-55182 and CVE-2025-66478). The flaw permits unauthenticated attackers to achieve deterministic RCE via insecure deserialization of malformed HTTP payloads, with near-100% reliability against default deployments. Vendors have issued patched releases; administrators should apply upgrades immediately. Palo Alto Networks Unit 42 published detection guidance and hunting queries to help identify exploitation and post-exploitation activity.

🔒 Cisco Talos disclosed an out‑of‑bounds read in PDF‑XChange Editor (CVE‑2025‑58113) and ten vulnerabilities affecting Socomec DIRIS Digiware M series and Easy Config. The issues range from information disclosure and authentication bypass to multiple denial‑of‑service and buffer overflow flaws. Vendors have released patches; administrators should apply updates and deploy Snort rules to detect exploitation.