High severity8.6NVD Advisory· Published May 13, 2021· Updated Jun 17, 2026
CVE-2021-20988
CVE-2021-20988
Description
In Hilscher rcX RTOS versions prios to V2.1.14.1 the actual UDP packet length is not verified against the length indicated by the packet. This may lead to a denial of service of the affected device.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
12- cpe:2.3:o:pepperl-fuchs:ice1-16di-g60l-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- cpe:2.3:o:pepperl-fuchs:ice1-16dio-g60l-c1-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- cpe:2.3:o:pepperl-fuchs:ice1-16dio-g60l-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- cpe:2.3:o:pepperl-fuchs:ice1-8di8do-g60l-c1-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- cpe:2.3:o:pepperl-fuchs:ice1-8di8do-g60l-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- cpe:2.3:o:pepperl-fuchs:ice1-8iol-g30l-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- cpe:2.3:o:pepperl-fuchs:ice1-8iol-g60l-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- cpe:2.3:o:pepperl-fuchs:ice1-8iol-s2-g60l-v1d_firmware:*:*:*:*:*:*:*:*Range: <=f10017
- Range: ICE1-16DI-G60L-V1D
Patches
Vulnerability mechanics
References
2- cert.vde.com/de-de/advisories/vde-2021-018nvdThird Party Advisory
- kb.hilscher.com/display/ISMS/2019-04-10+Wrong+handling+of+the+UDP+checksumnvdVendor Advisory
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