7.5

CVE-2022-25622: siemens simatic_cfu_diq_firmware Uncontrolled Resource Consumption

CVSS: 7.5v3.1HighModified
Published 12-04-2022Last modified 21-04-2025
Open JSON

Vulnerability summary

CVE-2022-25622 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in siemens simatic_cfu_diq_firmware. EPSS estimates a 0.90% chance of exploitation in the next 30 days, higher than 58.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.90%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-04-2022
    PublishedVulnerability first disclosed.
  2. 21-04-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.90%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

+0.02 pp

From 0.88% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.90%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Siemens77 products

1 vendor · 77 products

References

2 links