Out-of-bounds Read in Siemens Pss_cape
CVE-2021-20093
A buffer over-read vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to disclose heap memory contents or crash the CodeMeter Runtime Server.
Vulnerability class: Buffer Overflow
EPSS: 0.333 (98.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Siemens Pss_cape
- Siemens Sicam_230
- Siemens Sicam_230_firmware
- Siemens Simatic_information_server — versions 2019, 2020
- Siemens Simatic_pcs_neo
- Siemens Simatic_process_historian — versions 2020
- Siemens Simatic_wincc_oa — versions 3.17, 3.18
- Siemens Simit_simulation_platform — versions 10.3
- Siemens Sinec_infrastructure_network_services — versions 1.0.1
- Siemens Sinema_remote_connect_server — versions 3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vulnreport@tenable.com (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- vulnreport@tenable.com (x_refsource_MISC, Mitigation, Vendor Advisory)
- vulnreport@tenable.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- vulnreport@tenable.com (US Government Resource, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-20093?
- CVE-2021-20093 is a critical-severity vulnerability in Siemens Pss_cape, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2021-06-16.
- How severe is CVE-2021-20093?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2021-20093 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.