VulnerabilityModified

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.

HIGH 7.5EPSS 0.88%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.88% probability · 57th percentile
CISA KEV: Not listed
Weakness: CWE-400
Affected: siemens/simatic cfu diq firmware · siemens/simatic cfu pa firmware · siemens/simatic s7-300 cpu firmware · siemens/simatic s7-400h v6 firmware · siemens/simatic s7-400 pn\/dp v7 firmware · siemens/simatic s7-410 v8 firmware · siemens/simatic s7-410 v10 firmware · siemens/simatic s7-1500 cpu firmware · siemens/simatic tdc cp51m1 firmware · siemens/simatic tdc cpu555 firmware · siemens/simatic winac rtx firmware · siemens/simit simulation platform
Source: productcert@siemens.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.