VulnerabilityModified

CVE-2021-25660

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl.

HIGH 7.5EPSS 0.97%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.97%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition.

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: 0.97% probability · 60th percentile
CISA KEV: Not listed
Weakness: CWE-788, CWE-119
Affected: siemens/simatic hmi comfort outdoor panels 7\" firmware · siemens/simatic hmi comfort outdoor panels 15\" firmware · siemens/simatic hmi comfort panels 4\" firmware · siemens/simatic hmi comfort panels 22\" firmware · siemens/simatic hmi ktp mobile panels ktp400f firmware · siemens/simatic hmi ktp mobile panels ktp700 firmware · siemens/simatic hmi ktp mobile panels ktp700f firmware · siemens/simatic hmi ktp mobile panels ktp900 firmware · siemens/simatic hmi ktp mobile panels ktp900f firmware · siemens/simatic wincc runtime advanced
Source: productcert@siemens.com

References

https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdfPatch, Vendor Advisory

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