CVE-2026-21620— TFTP Path Traversal
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I. Basic Information for CVE-2026-21620
Vulnerability Information
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Vulnerability Title
TFTP Path Traversal
Source: NVD (National Vulnerability Database)
Vulnerability Description
Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.erl. This issue affects otp: from 17.0, from 07b8f441ca711f9812fad9e9115bab3c3aa92f79; otp: from 5.10 before 7.0; otp: from 1.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
相对路径遍历
Source: NVD (National Vulnerability Database)
Vulnerability Title
Erlang/OTP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Erlang/OTP是Erlang/OTP开源的一个JavaScript编写的处理处理异常的库。该库可以捕捉node.js内置API引发的异常。 Erlang/OTP存在安全漏洞，该漏洞源于tftp_file模块存在相对路径遍历和隔离不当问题，可能导致路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-21620
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IV. Related Vulnerabilities
Same product: OTP
- CVE-2026-32147
SFTP chroot bypass via path traversal in SSH_FXP_FSETSTAT - CVE-2026-28808
ScriptAlias CGI targets bypass directory auth in inets httpd - CVE-2026-32144
OCSP designated-responder authorization bypass via missing s - CVE-2026-28810
Predictable DNS Transaction IDs Enable Cache Poisoning in Bu - CVE-2026-23941
Request smuggling via first-wins Content-Length parsing in i
Same vendor: Erlang
- CVE-2026-32147
SFTP chroot bypass via path traversal in SSH_FXP_FSETSTAT - CVE-2026-28808
ScriptAlias CGI targets bypass directory auth in inets httpd - CVE-2026-32144
OCSP designated-responder authorization bypass via missing s - CVE-2026-28810
Predictable DNS Transaction IDs Enable Cache Poisoning in Bu - CVE-2026-23941
Request smuggling via first-wins Content-Length parsing in i
Same weakness: CWE-23
- CVE-2026-8209
Gibbon<30.0.01路径遍历漏洞导致拒绝服务 - CVE-2026-43533
OpenClaw < 2026.4.10 - Arbitrary Local File Read via QQBot M - CVE-2026-43616
Detect-It-Easy < 3.21 Path Traversal Arbitrary File Write - CVE-2026-42085
OpenC3 COSMOS: Arbitrary write to plugins directory via path - CVE-2026-22070
ColorOS Assistant Path Traversal Vulnerability
V. Comments for CVE-2026-21620
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