Vulnerability · Published Sep 27, 2021 · Assigned by CERTVDE
CVE-2021-34570Phoenix Contact: DoS for PLCnext Control devices in versions prior to 2021.0.5 LTS
High 7.5
In plain English
A high-severity improper input validation in AXC F from Phoenix Contact. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.0%top 37.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | AXC F | AXC F 1152 (1151412) – before 2021.0.5 LTSAXC F 2152 (2404267) – before 2021.0.5 LTSAXC F 3152 (1069208) – before 2021.0.5 LTSAXC F 2152 Starterkit (1046568) – before 2021.0.5 LTS |
| Phoenix Contact | RFC | RFC 4072S (1051328) – before 2021.0.5 LTS |
| Phoenix Contact | PLCnext | PLCnext Technology Starterkit (1188165) – before 2021.0.5 LTS |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://cert.vde.com/en/advisories/VDE-2021-029/ x_refsource_CONFIRM