CVE-2021-20988
CVE-2021-20988 — Hilscher rcX RTOS: Wrong handling of the UDP checksum
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.
Published Updated Sources: cvelistV5, CERTVDE
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
1%
chance of exploitation in 30 days
CVSS base
8.6
HIGH
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (2)
Products (3)
Every base score collected
Sources score independently and disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Source |
|---|---|---|---|---|---|
| 8.6 | CVSS 3.1 | HIGH | — | — | cvelistV5 |
Weakness & attack patterns
- CWE-119
References
2 on the record
- kb.hilscher.com/display/ISMS/2019-04-10+Wrong+handling+of+the+UDP+checksum
x_refsource_CONFIRM
- cert.vde.com/de-de/advisories/vde-2021-018
x_refsource_CONFIRM
Elsewhere on this site
- hilscherevery CVE for this vendor
- pepperl fuchsevery CVE for this vendor
- CWE-119other pages naming this weakness
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.