Vulnerability · Published Nov 9, 2021 · Assigned by siemens
CVE-2021-31881
High 7.1
In plain English
A high-severity out-of-bounds read in Capital Embedded AR Classic 431-422 from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)1.5%top 25.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). When processing a DHCP OFFER message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0008)
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Capital Embedded AR Classic 431-422 | 0 – before * |
| Siemens | Capital Embedded AR Classic R20-11 | 0 – before V2303 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf x_refsource_MISC
- https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf x_refsource_MISC
- https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf x_refsource_MISC
- https://cert-portal.siemens.com/productcert/html/ssa-114589.html
- https://cert-portal.siemens.com/productcert/html/ssa-044112.html
- https://cert-portal.siemens.com/productcert/html/ssa-620288.html