Security readout for executives and security teams
Plain-English summary
This issue can expose saved WirelessHART gateway credentials through a browser autocomplete password field. It is not a remote device takeover flaw; the attacker first needs control of a user’s computer and the user must have logged in before.
Executive priority
Treat as a moderate OT credential exposure risk. Prioritize remediation where gateway credentials could enable operational access or where admin workstations have weak controls, shared use, or malware exposure.
Technical view
CVE-2021-34560 is CWE-522 in PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.9 affecting listed Phoenix Contact WHA-GW-F2D2-0-AS-Z2-ETH variants at 3.0.9. CVSS 3.1 is 5.5, local attack vector, user interaction required, high confidentiality impact, no integrity or availability impact.
Likely exposure
Exposure is most relevant where affected gateway administration occurs from shared, compromised, poorly managed, or malware-exposed workstations. Internet exposure of the gateway is not required by the CVSS vector.
Exploitation context
The bundle does not show KEV listing or active exploitation. The described scenario requires attacker control of the user’s computer and prior successful login by that user, making endpoint compromise the practical prerequisite.
Researcher notes
Evidence is limited to the CVE description, CVSS data, affected product entries, CWE-522, and VDE advisory reference. No exploit details, active exploitation, or specific fixed version is provided in the bundle.
Mitigation direction
- Identify affected WirelessHART gateway models and firmware versions in OT inventories.
- Review the VDE/vendor advisory for supported remediation or firmware guidance.
- Harden and monitor workstations used to administer affected gateways.
- Avoid storing gateway administrator credentials in browsers until vendor guidance is applied.
- Rotate affected credentials if workstation compromise or credential exposure is suspected.
Validation and detection
- Confirm whether listed WHA-GW-F2D2 gateway variants run firmware 3.0.9 or earlier.
- Check gateway login forms for password autocomplete behavior in affected versions.
- Review administrator workstation security logs for compromise indicators.
- Verify whether users previously logged into affected gateways from exposed endpoints.
- Document vendor advisory status and remediation decisions for each affected asset.
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-522: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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-2021-34560 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://cert.vde.com/en-us/advisories/vde-2021-027CVE 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.
Insufficiently Protected Credentials
Insufficiently Protected Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.