Information disclosure in Siemens Simatic Pcs 7
CVE-2021-40364
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 5). The affected systems store sensitive information in log files. An attacker with access to the log files could publicly expose the information or reuse it to develop further attacks on the system.
EPSS: 0.002 (15.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Siemens Simatic_pcs_7 — versions 9.1
- Siemens Simatic Pcs 7 V8.2 — versions All versions
- Siemens Simatic Pcs 7 V9.0 — versions All versions < V9.0 SP3 UC04
- Siemens Simatic Pcs 7 V9.1 — versions All versions < V9.1 SP1
- Siemens Simatic_wincc — versions 7.5, 15, 16
- Siemens Simatic Wincc V15 And Earlier — versions All versions < V15 SP1 Update 7
- Siemens Simatic Wincc V16 — versions All versions < V16 Update 5
- Siemens Simatic Wincc V17 — versions All versions < V17 Update 2
- Siemens Simatic Wincc V7.4 — versions All versions < V7.4 SP1 Update 19
- Siemens Simatic Wincc V7.5 — versions All versions < V7.5 SP2 Update 5
Weakness classification (CWE)
References
- productcert@siemens.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-40364?
- CVE-2021-40364 is a medium-severity vulnerability in Siemens Simatic Pcs 7, classified under Insertion of Sensitive Information into Log File. CVSS score: 5.5/10. Published 2021-11-09.
- How severe is CVE-2021-40364?
- Medium severity. CVSS v3 base score is 5.5 out of 10.