Resource exhaustion in Siemens Simatic Cfu Diq
CVE-2022-25622
The PROFINET (PNIO) stack, when integrated with the Interniche IP stack, improperly handles internal resources for TCP segments where the minimum TCP-Header length is less than defined. This could allow an attacker to create a denial of service condition for TCP services on affected devices by sending specially crafted TCP segments.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.009 (59.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Siemens Simatic Cfu Diq — versions 0
- Siemens Simatic Cfu Diq
- Siemens Simatic Cfu Diq Firmware
- Siemens Simatic Cfu Pa — versions 0
- Siemens Simatic Cfu Pa
- Siemens Simatic Cfu Pa Firmware
- Siemens Simatic Et 200al Im 157-1 Pn — versions All versions
- Siemens Simatic Et200ecopn, Ai 8xrtd/tc, M12-L — versions V5.1.1
- Siemens Simatic Et200ecopn, Cm 4x Io-Link, M12-L — versions V5.1.1
- Siemens Simatic Et200ecopn, Cm 8x Io-Link, M12-L — versions V5.1.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2022-25622?
- CVE-2022-25622 is a medium-severity vulnerability in Siemens Simatic Cfu Diq, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2022-04-12.
- How severe is CVE-2022-25622?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2022-25622 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.