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tftp
About this tag
The tftp tag on WindowsForum.com covers discussions about the Trivial File Transfer Protocol (TFTP) and related security vulnerabilities. Recent threads highlight a path traversal flaw in Erlang/OTP's TFTP implementation (CVE-2026-21620) that allows remote file access outside the intended root directory. Other content addresses network device vulnerabilities, including Cisco Smart Install exploits (CVE-2018-0171) and Windows Deployment Services (WDS) zero-click DoS attacks. While TFTP itself is not always the primary focus, these threads often involve TFTP as a vector or component in broader network security issues. Topics include patching, hardening, and disabling vulnerable services to mitigate risks from state-sponsored threat actors like Static Tundra.
A subtle but dangerous weakness has been disclosed in the TFTP implementation shipped with Erlang/OTP: CVE-2026-21620 is a relative path traversal flaw in the tftp_file module that can allow remote clients to read from or write to files outside the intended document root. The issue arises from...
This week’s Cisco Talos briefing reads like a travelogue-turned-threat-advisory: after a short, evocative opening about cherry pie and Douglas firs, the post pivots sharply to an urgent security alert — a Russian state‑backed cluster Talos calls Static Tundra is actively exploiting a...
A surge of concern has swept through IT and cybersecurity circles following the disclosure of a critical zero-click vulnerability in Microsoft’s Windows Deployment Services (WDS) platform. Unlike more intricate bugs that require a sophisticated attacker or privileged access, this flaw enables...
Original release date: April 16, 2018
Systems Affected
Generic Routing Encapsulation (GRE) Enabled Devices
Cisco Smart Install (SMI) Enabled Devices
Simple Network Management Protocol (SNMP) Enabled Network Devices
Overview
This joint Technical Alert (TA) is the result of analytic efforts...