Vulnerability · Published Jun 25, 2021 · Assigned by CERTVDE
CVE-2021-21002Denial of Service in Phoenix Contact FL COMSERVER UNI products
High 7.5
In plain English
A high-severity security flaw in FL COMSERVER 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 38.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In Phoenix Contact FL COMSERVER UNI in versions < 2.40 a invalid Modbus exception response can lead to a temporary denial of service.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | FL COMSERVER | UNI 232/422/485 (2313452) – before 2.40UNI 232/422/485-T (2904817) – before 2.40 |
Weakness: CWE-772 · 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-us/advisories/vde-2021-022 x_refsource_CONFIRM