Security readout for executives and security teams
Plain-English summary
Hitachi ABB Power Grids eSOMS 6.3 and earlier may let browsers save credentials from a password field that should not allow autocomplete. If an attacker can access those stored browser credentials, they could obtain valid user passwords. The published impact is confidentiality loss, not system outage or data modification.
Executive priority
Treat this as a high-priority credential exposure issue for environments running affected eSOMS versions. It is most urgent where eSOMS supports sensitive operational workflows and users access it from shared, unmanaged, or weakly controlled workstations.
Technical view
CVE-2021-35527 is a CWE-200 information exposure issue in the eSOMS web application password field. The CVSS 3.1 score is 7.5, vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Sources identify affected versions as eSOMS 6.3 and prior, but the bundle does not name a fixed version.
Likely exposure
Organizations using Hitachi ABB Power Grids eSOMS version 6.3 or earlier are in scope. Exposure depends on whether users access eSOMS through browsers that store passwords and whether attackers can reach or compromise those stored credentials.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not marked CISA KEV. The described attack outcome is credential access through browser-stored passwords, so credential hygiene and workstation/browser control matter.
Researcher notes
Evidence is limited to the CVE record and vendor reference. The bundle does not provide patch details, proof-of-concept status, or exploit telemetry. Avoid assuming broader Hitachi, ABB, or Power Grids products are affected beyond eSOMS 6.3 and prior.
Mitigation direction
- Check the ABB/Hitachi advisory for supported remediation or upgrade guidance.
- Inventory eSOMS deployments and prioritize versions 6.3 and earlier.
- Disable browser password saving for eSOMS where policy control is available.
- Rotate eSOMS credentials that may have been stored in browsers.
- Restrict eSOMS access to trusted networks and managed workstations.
Validation and detection
- Confirm deployed eSOMS versions and identify any 6.3 or earlier instances.
- Review browser policies on workstations used to access eSOMS.
- Check whether eSOMS credentials are saved in managed browsers.
- Verify vendor remediation guidance has been applied or tracked.
- Review logs for unusual eSOMS authentication activity.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-35527 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://search.abb.com/library/Download.aspx?DocumentID=9AKK107992A0957&LanguageCode=en&DocumentPartId=&Action=LaunchCVE reference · x_refsource_CONFIRM
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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.