Buffer overflow in Hilscher Rcx Rtos
CVE-2021-20988
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Hilscher Rcx Rtos — versions unspecified
- Hilscher Rcx Rtos
- Pepperl+fuchs Ethernet Io Modules Ice1-16 — versions ICE1-16DI-G60L-V1D, ICE1-16DIO-G60L-C1-V1D, ICE1-16DIO-G60L-V1D
- Pepperl+fuchs Ethernet Io Modules Ice1-8 — versions ICE1-8DI8DO-G60L-C1-V1D, ICE1-8DI8DO-G60L-V1D, ICE1-8IOL-G30L-V1D
- Pepperl-Fuchs Ice1-16di-G60l-V1d
- Pepperl-Fuchs Ice1-16di-G60l-V1d Firmware
- Pepperl-Fuchs Ice1-16dio-G60l-C1-V1d
- Pepperl-Fuchs Ice1-16dio-G60l-C1-V1d Firmware
- Pepperl-Fuchs Ice1-16dio-G60l-V1d
- Pepperl-Fuchs Ice1-16dio-G60l-V1d Firmware
Weakness classification (CWE)
References
- kb.hilscher.com/display/ISMS/2019-04-10+Wrong+handling+of+the+UDP+checksum (Vendor Advisory)
- cert.vde.com/de-de/advisories/vde-2021-018 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20988?
- CVE-2021-20988 is a high-severity vulnerability in Hilscher Rcx Rtos, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.6/10. Published 2021-05-13.
- How severe is CVE-2021-20988?
- High severity. CVSS v3 base score is 8.6 out of 10.