CVE-2021-20094: siemens pss_cape Out-of-bounds Read
CVSS: 7.5v3.1HighModified
Published 16-06-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-20094 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in siemens pss_cape. EPSS estimates a 4.67% chance of exploitation in the next 30 days, higher than 91.6% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
4.67%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 16-06-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A denial of service vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
4.67%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
0.00 pp
From 4.67% on 19-09-2026
19-09-202619-10-2026
EPSS score4.67%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (tenable.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Siemens2 products
Wibu1 product
- codemeter< 7.21a
2 vendors · 3 products
References
4 links- cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-02.pdfX Refsource MISCMitigationVendor Advisory
us-cert.cisa.gov/ics/advisories/icsa-21-210-02X Refsource MISCThird Party AdvisoryUS Government Resource