VulnerabilityModified

CVE-2020-7586

HIGH 7.8EPSS 0.42%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). 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 PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). A buffer overflow vulnerability could allow a local attacker to cause a Denial-of-Service situation. The security vulnerability could be exploited by an attacker with local access to the affected systems. Successful exploitation requires user privileges but no user interaction. The vulnerability could allow an attacker to compromise the availability of the system as well as to have access to confidential information.

CVSS 3.1: 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.42% probability · 36th percentile
CISA KEV: Not listed
Weakness: CWE-122, CWE-787
Affected: siemens/simatic pcs 7 · siemens/simatic process device manager · siemens/simatic step 7 · siemens/sinamics starter
Source: productcert@siemens.com

References

https://cert-portal.siemens.com/productcert/pdf/ssa-689942.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-161-05
https://www.us-cert.gov/ics/advisories/icsa-20-161-05Third Party Advisory, US Government Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-689942.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-161-05
https://www.us-cert.gov/ics/advisories/icsa-20-161-05Third Party Advisory, US Government Resource

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