CVE-2026-21620

Summary

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.

Affected Software

VendorProductVersion RangeStatus
ErlangOTP17.0 < *affected
ErlangOTP07b8f441ca711f9812fad9e9115bab3c3aa92f79 < *affected
ErlangOTP5.10 < 7.0affected
ErlangOTP1.0 < *affected

Weaknesses

  • CWE-23: CWE-23 Relative Path Traversal

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References