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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.333 (98.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.333 · newest: 0.333 · change: 0.000
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
- www.tenable.com/security/research/tra-2021-24 (Exploit, Patch, Third Party Advisory)
- cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-… (Mitigation, Vendor Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf (Patch, Third Party Advisory)
- us-cert.cisa.gov/ics/advisories/icsa-21-210-02 (US Government Resource, Third Party Advisory)
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.