CVE-2026-21620
TFTP Path Traversal
LOW 2.3
At a glance
- Source
- NVD
- EPSS
- EPSS 0.52 % · percentile 44 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- EEF
- NVD status
- Deferred
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.
Weaknesses (CWE)
- CWE-23 — Relative Path Traversal
References
- https://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp
- https://cna.erlef.org/cves/CVE-2026-21620.html
- https://osv.dev/vulnerability/EEF-CVE-2026-21620
- https://www.erlang.org/doc/system/versions.html#order-of-versions
- https://github.com/erlang/otp/pull/10706
- https://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a
- https://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e
- https://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | LOW 2.3 | 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 | EEF |
| CVSS 4.0 | LOW 2.3 | 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 | NVD · 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (Secondary) |
European references
- ENISA EUVD · EUVD-2026-7742
- GCVE · GCVE-0-2026-21620
CERT-FR advisories
- CERTFR-2026-AVI-0223 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Erlang · OTP | affected 17.0 < * ; affected 07b8f441ca711f9812fad9e9115bab3c3aa92f79 < * |
| Erlang · OTP | affected 5.10 < 7.0 |
| Erlang · OTP | affected 1.0 < * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |