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Vulnerability · Published Nov 9, 2021 · Assigned by siemens

CVE-2021-31890

High 7.5

In plain English

A high-severity security flaw 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 2.2% (higher than 83% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.2%top 17.2% 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), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions < V1.0.0.0). The total length of an TCP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on the network buffer organization in memory. (FSMD-2021-0017)

Affected products (as reported)

VendorProductVersions
Siemens Capital Embedded AR Classic 431-422 0 – before *
Siemens Capital Embedded AR Classic R20-11 0 – before V2303
Siemens PLUSCONTROL 1st Gen All versions
Siemens SIMOTICS CONNECT 400 All versions < V0.5.0.0
Siemens SIMOTICS CONNECT 400 All versions < V1.0.0.0

Weakness: CWE-240 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References