CVE-2020-13872 json
Royal TS before 5 has a 0.0.0.0 listener, which makes it easier for attackers to bypass tunnel authentication via a brute-force approach.
published 2020-06-09 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6080
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.7%
- EPSS 2.7% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
Royal TS before 5 has a 0.0.0.0 listener, which makes it easier for attackers to bypass tunnel authentication via a brute-force approach.
Patch / fix
- royalapps royal_ts 5.0
Exploit prediction
2.70% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hacktips.it https://hacktips.it/royalts-ssh-tunnel-authentication-bypass/ referenced PoC, tagged "exploit" by a source, unverified
- packetstormsecurity.com http://packetstormsecurity.com/files/158000/RoyalTS-SSH-Tunnel-Authentication-Bypass.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 3.3 | AV:A/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
References
-
hacktips.it
/royalts-ssh-tunnel-authentication-bypass/
exploit
-
packetstormsecurity.com
/files/158000/RoyalTS-SSH-Tunnel-Authentication-Bypass.html
exploit, third-party-advisory, vdb-entry
-
seclists.org
/fulldisclosure/2020/Jun/14
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-13872
- NVD CVE-2020-13872
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