Vulnerability · Published Feb 16, 2021 · Assigned by CERTVDE
CVE-2021-20987Hilscher: EtherNet/IP stack crash for specific CIP service
High 8.6
In plain English
A high-severity out-of-bounds write in EtherNet/IP Core V2 from Hilscher. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 67% of all known vulnerabilities).
Severity (CVSS 3.1)8.6High
Exploit odds (30 days)1.1%top 33.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Hilscher | EtherNet/IP Core V2 | V2 – before V2.13.0.21 |
| Pepper+Fuchs | PCV/PXV/PGV | PXV100-F200-B25-V1D, PXV100I-F200-B25-V1D, PCV100-F200-B25-V1D-6011-6720, PCV50-F200-B25-V1D, PCV80-F200-B25-V1D, PCV100-F200-B25-V1D-6011 – through V1.10.0 |
| Pepper+Fuchs | WCS | WCS3B-LS510, WCS3B-LS510H, WCS3B-LS510D, WCS3B-LS510DH, WCS3B-LS510H-OM, WCS3B-LS510DH-OM, WCS3B-LS510D-OM, WCS3B-LS510-OM – through V1.2.1 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
References
- https://kb.hilscher.com/pages/viewpage.action?pageId=108969480 x_refsource_CONFIRM
- https://cert.vde.com/en-us/advisories/vde-2021-007 x_refsource_CONFIRM