Buffer overflow in Siemens Simatic Pcs 7
CVE-2020-7586
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Siemens Simatic Pcs 7
- Siemens Simatic Pcs 7 V8.2 And Earlier — versions All versions
- Siemens Simatic Pcs 7 V9.0 — versions All versions < V9.0 SP3
- Siemens Simatic Pdm — versions All versions < V9.2
- Siemens Simatic Process Device Manager
- Siemens Simatic Step 7 — versions 5.6
- Siemens Simatic Step 7 V5.x — versions All versions < V5.6 SP2 HF3
- Siemens Sinamics Starter — versions 5.4
- Siemens Sinamics Starter (Containing Step 7 Oem Version) — versions All versions < V5.4 HF2
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-689942.pdf (Vendor Advisory)
- www.us-cert.gov/ics/advisories/icsa-20-161-05 (US Government Resource, Third Party Advisory)
- us-cert.cisa.gov/ics/advisories/icsa-20-161-05
Frequently asked questions
- What is CVE-2020-7586?
- CVE-2020-7586 is a high-severity vulnerability in Siemens Simatic Pcs 7, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2020-06-10.
- How severe is CVE-2020-7586?
- High severity. CVSS v3 base score is 7.8 out of 10.