Buffer overflow in Siemens Simatic Pcs 7 V9.1
CVE-2023-50821
A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions < V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions < V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (7.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Siemens Simatic Pcs 7 V9.1 — versions 0
- Siemens Simatic Wincc Runtime Professional V17 — versions 0
- Siemens Simatic Wincc Runtime Professional V18 — versions 0
- Siemens Simatic Wincc Runtime Professional V19 — versions 0
- Siemens Simatic Wincc V7.5 — versions 0
- Siemens Simatic Wincc V8.0 — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2023-50821?
- CVE-2023-50821 is a medium-severity vulnerability in Siemens Simatic Pcs 7 V9.1, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2024-04-09.
- How severe is CVE-2023-50821?
- Medium severity. CVSS v3 base score is 6.2 out of 10.
- Is CVE-2023-50821 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.