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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (28.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
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
- cert-portal.siemens.com/productcert/pdf/ssa-480937.pdf (Patch, 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.