CVE-2021-33014 json
KUKA KR C4 - Use of Hard-Coded Credentials
published 2022-05-26 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19735
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
An attacker can gain VxWorks Shell after login due to hard-coded credentials on a KUKA KR C4 control software for versions prior to 8.7 or any product running KSS.
Patch / fix
- KUKA KR C4 v8.7
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-208-01 updated cvss 8.8
KUKA KR C4
-
KUKA KR C4 < 8.7 KUKA KSSaffected: mitigation kuka.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- KUKA KR C4
- KUKA KSS (KUKA.SystemSoftware)
Classification
- Weakness
-
- CWE-798 Use of Hard-coded Credentials
References
-
cisa.gov
/uscert/ics/advisories/icsa-21-208-01
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2021-33014
- NVD CVE-2021-33014
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.