CVE-2026-21620

LowCVSS 2.3/10Last modified Jul 24, 2026

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.

Metrics

CVSS 4.0 2.3/10CVSS: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

Weakness enumeration

CWE-23

Affected software

VendorProductVersions
ErlangOTP>= 17.0, < *; >= 07b8f441ca711f9812fad9e9115bab3c3aa92f79, < *
ErlangOTP>= 5.10, < 7.0
ErlangOTP>= 1.0, < *

References

Timeline

Published
Feb 20, 2026
Last modified
Jul 24, 2026
NVD status
Deferred

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