This blog details research and analysis of an active campaign that exploits a critical unauthenticated remote code execution (RCE) vulnerability, CVE-2025-3248, that has been identified in Langflow versions prior to 1.3.0. Langflow is a Python-powered visual framework for building AI applications with over 70,000 GitHub stars, and its versions prior to 1.3.0 contains a flaw in its code validation mechanism that permits arbitrary code execution.
Unauthenticated attackers can exploit this vulnerability by crafting malicious POST requests to the /api/v1/validate/code endpoint. The malicious payload in our investigation was found embedded within argument defaults or decorators of a Python function definition. Since Langflow does not enforce input validation or sandboxing, these payloads are compiled and executed within the server’s context, leading to RCE.
Read more…
Source: Trend Micro
Sign up for our Newsletter
The latest news and insights delivered right to your inbox.
Related:
- Hackers mostly targeted Microsoft, Google, Apple zero-days in 2022
March 20, 2023
Hackers continue to target zero-day vulnerabilities in malicious campaigns, with researchers reporting that 55 zero-days were actively exploited in 2022, most targeting Microsoft, Google, and Apple products. Most of these vulnerabilities (53 out of 55) enabled the attacker to either gain elevated privileges or perform remote code execution on vulnerable devices. Read more… Source: Bleeping Computer
- CISA Releases Eight Industrial Control Systems Advisories
March 16, 2023
CISA released eight Industrial Control Systems (ICS) advisories on March 16, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations: ICSA-23-075-01 Siemens SCALANCE, RUGGEDCOM Third-Party ICSA-23-075-02 Siemens RUGGEDCOM CROSSBOW V5.3 Read more… Source: U.S. Cybersecurity and Infrastructure ...
- Threat Actors Exploited Progress Telerik Vulnerability in U.S. Government IIS Server
March 15, 2023
Today, the CISA, Federal Bureau of Investigation (FBI), and Multi-State Information Sharing and Analysis Center (MS-ISAC) released a joint Cybersecurity Advisory (CSA), Threat Actors Exploit Progress Telerik Vulnerability in U.S. Government IIS Server. This joint CSA provides IT infrastructure defenders with tactics, techniques, and procedures (TTPs), indicators of compromise (IOCs), and methods to detect and protect ...
- Hands up who DIDN’T exploit this years-old flaw to ransack a US govt web server…
March 15, 2023
Multiple criminals, including at least potentially one nation-state group, broke into a US federal government agency’s Microsoft Internet Information Services web server by exploiting a critical three-year-old Telerik bug to achieve remote code execution. The snafu happened between November 2022 and early January, according to a joint alert from the FBI, CISA, and America’s Multi-State Information ...
- Magniber ransomware actors used a variant of Microsoft SmartScreen bypass
March 14, 2023
Google’s Threat Analysis Group (TAG) recently discovered usage of an unpatched security bypass in Microsoft’s SmartScreen security feature, which financially motivated actors are using to deliver the Magniber ransomware without any security warnings. The attackers are delivering MSI files signed with an invalid but specially crafted Authenticode signature. The malformed signature causes SmartScreen to return ...
- SAP releases security updates fixing five critical vulnerabilities
March 14, 2023
Software vendor SAP has released security updates for 19 vulnerabilities, five rated as critical, meaning that administrators should apply them as soon as possible to mitigate the associated risks. The flaws fixed this month impact many products, but the critical severity bugs affect SAP Business Objects Business Intelligence Platform (CMC) and SAP NetWeaver. Read more… Source: Bleeping Computer