Security readout for executives and security teams
Plain-English summary
Emerson OpenEnterprise stores or protects some credentials with inadequate encryption. A person with local, low-privileged access could potentially recover credentials used to reach field devices or external systems. The published severity is low, but impact depends on what those recovered credentials can access in the OT environment.
Executive priority
Handle during normal OT vulnerability management unless local access is broadly available or the stored credentials reach critical field systems. Prioritize inventory, access restriction, and vendor guidance review before emergency action.
Technical view
CVE-2020-16235 is CWE-326 in Emerson OpenEnterprise up through version 3.3.5. CVSS 3.1 is 3.8: local attack vector, low complexity, low privileges, no user interaction, changed scope, low confidentiality impact, and no listed integrity or availability impact.
Likely exposure
Exposure is most likely where Emerson OpenEnterprise, especially version 3.3.5 or earlier, is deployed on systems accessible to local authenticated users. The source bundle does not identify internet-exposed exploitation or affected CPEs.
Exploitation context
The CVSS vector requires local access and low privileges. The bundle does not show CISA KEV listing or any cited evidence of active exploitation. Risk increases if recovered credentials can access operational field devices or connected external systems.
Researcher notes
Evidence is limited to the CVE record and CISA advisory reference in the bundle. Avoid assuming remote exploitability, active exploitation, or a specific fixed version. The main research focus is credential exposure paths and downstream privilege from recovered credentials.
Mitigation direction
- Check Emerson and CISA guidance for supported updates or compensating controls.
- Restrict local access to OpenEnterprise hosts to approved administrators only.
- Reduce privileges of accounts that can log into OpenEnterprise systems.
- Rotate affected field-device and external-system credentials if exposure is suspected.
- Segment OT assets so recovered credentials have limited reach.
Validation and detection
- Inventory OpenEnterprise deployments and confirm installed versions.
- Identify whether any deployment is version 3.3.5 or earlier.
- Review who has local login access to affected hosts.
- Map stored credentials to field devices and external systems.
- Check CISA and Emerson advisories for current remediation details.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-326: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-16235 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N21.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.8LowVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-20-238-02CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Inadequate Encryption Strength
Inadequate Encryption Strength represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.