TFTP Path Traversal

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-21620
StatePUBLISHED
AssignerEEF
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-20 11:15:56 UTC
Updated2026-04-06 17:17:07 UTC
DescriptionRelative 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.

Risk And Classification

Primary CVSS: v4.0 2.3 LOW from 6b3ad84c-e1a6-4bf7-a703-f496b71e49db

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

Problem Types: CWE-23 | CWE-23 CWE-23 Relative Path Traversal

VersionSourceTypeScoreSeverityVector
4.06b3ad84c-e1a6-4bf7-a703-f496b71e49dbSecondary2.3LOWCVSS: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/C...
4.0CNACVSS2.3LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Erlang OTP affected 17.0 * otp Not specified
CNA Erlang OTP affected 07b8f441ca711f9812fad9e9115bab3c3aa92f79 * git Not specified
CNA Erlang OTP affected 5.10 7.0 otp Not specified
CNA Erlang OTP affected 1.0 * otp Not specified

References

ReferenceSourceLinkTags
github.com/erlang/otp/pull/10706 6b3ad84c-e1a6-4bf7-a703-f496b71e49db github.com
github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e 6b3ad84c-e1a6-4bf7-a703-f496b71e49db github.com
github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a 6b3ad84c-e1a6-4bf7-a703-f496b71e49db github.com
cna.erlef.org/cves/CVE-2026-21620.html 6b3ad84c-e1a6-4bf7-a703-f496b71e49db cna.erlef.org
www.erlang.org/doc/system/versions.html 6b3ad84c-e1a6-4bf7-a703-f496b71e49db www.erlang.org
osv.dev/vulnerability/EEF-CVE-2026-21620 6b3ad84c-e1a6-4bf7-a703-f496b71e49db osv.dev
github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp 6b3ad84c-e1a6-4bf7-a703-f496b71e49db github.com
github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344 6b3ad84c-e1a6-4bf7-a703-f496b71e49db github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Luigino Camastra (en)

CNA: Jakub Witczak (en)

CNA: Raimo Niskanen (en)

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