CVE-2026-21620

LOW

Erlang/OTP 17.0-17.0 - Relative Path Traversal in tftp_file Module

Title source: llm
STIX 2.1

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 OTP 17.0 before OTP 28.3.2, OTP 27.3.4.8 and OTP 26.2.5.17, corresponding to tftp from 1.0 before 1.2.4, 1.2.2.1 and 1.1.1.1; also inets from 5.10 before 7.0.

References (8)

Core 8

Scores

CVSS v4 2.3
EPSS 0.0046
EPSS Percentile 37.7%
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-23
Status published
Products (6)
Erlang/OTP 07b8f441ca711f9812fad9e9115bab3c3aa92f79
Erlang/OTP 1.0
Erlang/OTP 17.0
Erlang/OTP 5.10 - 7.0
Erlang/OTP pkg:otp/[email protected] - pkg:otp/[email protected]
Erlang/OTP pkg:otp/[email protected] - pkg:otp/tftp@*
Published Feb 20, 2026
Tracked Since Feb 20, 2026