Vulnerability · Published Jun 25, 2021 · Assigned by CERTVDE
CVE-2021-21003Denial of Service Vulnerability in Phoenix Contact FL SWITCH SMCS series products
Medium 5.3
In plain English
A medium-severity security flaw in FL NAT 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 0.9% (higher than 61% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.9%top 38.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the device is not affected.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | FL SWITCH | SMCS 16TX (2700996) – through 4.70SMCS 14TX/2FX (2700997) – through 4.70SMCS 14TX/2FX-SM (2701466) – through 4.70SMCS 8GT (2891123) – through 4.70SMCS 6GT/2SFP (2891479) – through 4.70SMCS 8TX-PN (2989103) – through 4.70SMCS 4TX-PN (2989093) – through 4.70SMCS 8TX (2989226) – through 4.70 |
| Phoenix Contact | FL NAT | SMN 8TX (2989365) – through 4.63SMN 8TX-M (2702443) – through 4.63 |
Weakness: CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- https://cert.vde.com/en-us/advisories/vde-2021-023 x_refsource_CONFIRM