CVE-2020-28390
No exploitation reported by the sources we read.
- Published2021-01-12
- WeaknessCWE-522
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability has been identified in Opcenter Execution Core (V8.2), Opcenter Execution Core (V8.3). The application contains an information leakage vulnerability in the handling of web client sessions. A local attacker who has access to the Web Client Session Storage could disclose the passwords of currently logged-in users.
Timeline
dates in UTC- 2021-01-1221:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-28390?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-28390?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.2 | = 8.2 | no fix published | NVD |
| 8.3 | = 8.3 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Siemens Opcenter Execution Core (Update B)
Siemens Opcenter Execution Core: V8.2 · Siemens Opcenter Execution Core: V8.3
Fix
- Vendor fix CISA ICSA-20-196-07 · 2 productsUpdate to Opcenter Execution Core V8.4 or later version
- Mitigation from the vendor CISA ICSA-20-196-07 · 2 productsConfigure a web application firewall to filter traffic containing XSS Injection and SQL Injections
- Mitigation from the vendor CISA ICSA-20-196-07 · 2 productsRestrict access to application webserver for trusted users only
- Mitigation from the vendor CISA ICSA-20-196-07 · 2 productsCVE-2020-28390: Ensure that only trusted persons have access to Opcenter Execution Core servers
Advisories and patches
- cert-portal.siemens.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.15.5read 2026-10-23
- NVDCVSS 2.02.1read 2026-10-23
- CNAweakness (CWE)CWE-522read 2026-10-23
- NVDweakness (CWE)CWE-522read 2026-10-23
- FIRST EPSSEPSS score0.5 %2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Published
- 2021-01-12
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-28390?
Is CVE-2020-28390 actively exploited?
What is the CVSS score for CVE-2020-28390?
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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.