Resource exhaustion in Siemens Simatic Cp 442-1 Rna
CVE-2022-27640
A vulnerability has been identified in SIMATIC CP 442-1 RNA (All versions < V1.5.18), SIMATIC CP 443-1 RNA (All versions < V1.5.18). The affected devices improperly handles excessive ARP broadcast requests. This could allow an attacker to create a denial of service condition by performing ARP storming attacks, which can cause the device to reboot.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.004 (28.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Siemens Simatic Cp 442-1 Rna — versions All versions < V1.5.18
- Siemens Simatic_cp_442-1_rna
- Siemens Simatic_cp_442-1_rna_firmware
- Siemens Simatic Cp 443-1 Rna — versions All versions < V1.5.18
- Siemens Simatic_cp_443-1_rna
- Siemens Simatic_cp_443-1_rna_firmware
Weakness classification (CWE)
References
- productcert@siemens.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-27640?
- CVE-2022-27640 is a medium-severity vulnerability in Siemens Simatic Cp 442-1 Rna, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2022-05-20.
- How severe is CVE-2022-27640?
- Medium severity. CVSS v3 base score is 6.5 out of 10.