CVE-2021-36799 json
KNX ETS5 through 5.7.6 uses the hard-coded password ETS5Password, with a salt value of Ivan Medvedev, allowing local users to read project…
published 2021-07-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23376
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
KNX ETS5 through 5.7.6 uses the hard-coded password ETS5Password, with a salt value of Ivan Medvedev, allowing local users to read project information. NOTE: This vulnerability only affects products that are no longer supported by the maintainer
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-798 Use of Hard-coded Credentials
References
-
knx.org
/knx-en/for-professionals/software/ets-5-professional/
product, vendor-advisory
-
github.com
/robertguetzkow/ets5-password-recovery
third-party-advisory
-
packetstormsecurity.com
/files/165200/ETS5-Password-Recovery-Tool.html
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-36799
- NVD CVE-2021-36799
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.