remote code execution | Breaking Cybersecurity News | The Hacker News

Cisco has announced patches to address four critical security flaws impacting Identity Services and Webex Services that could result in arbitrary code execution and allow an attacker to impersonate any user within the service. The details of the vulnerabilities are below - CVE-2026-20184 (CVSS score: 9.8) - An improper certificate validation in the integration of single sign-on (SSO) with Control Hub in Webex Services that could allow an unauthenticated, remote attacker to impersonate any user within the service and gain unauthorized access to legitimate Cisco Webex services. CVE-2026-20147 (CVSS score: 9.9) - An insufficient validation of user-supplied input vulnerability in Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) that could allow an authenticated, remote attacker in possession of valid administrative credentials to achieve remote code execution by sending crafted HTTP requests. CVE-2026-20180 and CVE-2026-20186 (CVSS scores: 9.9) ...

A recently disclosed critical security flaw impacting nginx-ui, an open-source, web-based Nginx management tool, has come under active exploitation in the wild. The vulnerability in question is CVE-2026-33032 (CVSS score: 9.8), an authentication bypass vulnerability that enables threat actors to seize control of the Nginx service. It has been codenamed MCPwn by Pluto Security. "The nginx-ui MCP (Model Context Protocol) integration exposes two HTTP endpoints: /mcp and /mcp_message," according to an advisory released by nginx-ui maintainers last month. "While /mcp requires both IP whitelisting and authentication (AuthRequired() middleware), the /mcp_message endpoint only applies IP whitelisting -- and the default IP whitelist is empty, which the middleware treats as 'allow all.'"  "This means any network attacker can invoke all MCP tools without authentication, including restarting nginx, creating/modifying/deleting nginx configuration files, and t...

A number of critical vulnerabilities impacting products from Adobe, Fortinet, Microsoft, and SAP have taken center stage in April's Patch Tuesday releases. Topping the list is an SQL injection vulnerability impacting SAP Business Planning and Consolidation and SAP Business Warehouse ( CVE-2026-27681 , CVSS score: 9.9) that could result in the execution of arbitrary database commands. "The vulnerable ABAP program allows a low-privileged user to upload a file with arbitrary SQL statements that will then be executed," Onapsis said in an advisory. In a potential attack scenario, a bad actor could abuse the affected upload-related functionality to run malicious SQL against BW/BPC data stores, extract sensitive data, and delete or corrupt database content. "Manipulated planning figures, broken reports, or deleted consolidation data can undermine close processes, executive reporting, and operational planning," Pathlock said . "In the wrong hands, t...

Microsoft on Tuesday released updates to address a record 169 security flaws across its product portfolio, including one vulnerability that has been actively exploited in the wild. Of these 169 vulnerabilities, 157 are rated Important, eight are rated Critical, three are rated Moderate, and one is rated Low in severity. Ninety-three of the flaws are classified as privilege escalation, followed by 21 information disclosure, 21 remote code execution, 14 security feature bypass, 10 spoofing, and nine denial-of-service vulnerabilities. Also included among the 169 flaws are four non-Microsoft issued CVEs impacting AMD (CVE-2023-20585), Node.js (CVE-2026-21637), Windows Secure Boot (CVE-2026-25250), and Git for Windows (CVE-2026-32631). The updates are in addition to 78 vulnerabilities that have been addressed in its Chromium-based Edge browser since the update that was released last month . T...

A critical security vulnerability impacting ShowDoc , a document management and collaboration service popular in China, has come under active exploitation in the wild. The vulnerability in question is CVE-2025-0520 (aka CNVD-2020-26585), which carries a CVSS score of 9.4 out of 10.0. It relates to a case of unrestricted file upload that stems from improper validation of file extension, allowing an attacker to upload arbitrary PHP files and achieve remote code execution. "[In] ShowDoc version before 2.8.7, an unrestricted and unauthenticated file upload issue is found and [an] attacker is able to upload a web shell and execute arbitrary code on server," according to an advisory released by Vulhub.  The vulnerability was addressed in ShowDoc version 2.8.7 , which was shipped in October 2020. The current version of the software is 3.8.1 . According to new details shared by Caitlin Cond...