Security readout for executives and security teams
Plain-English summary
AlanWeb SCADA records user credentials in logs. Anyone who gains access to those logs could reuse the credentials for authorized system access. The disclosed severity is medium, but consequences may be significant in operational environments. Version 9.8.5 fixes the issue.
Executive priority
Treat this as a prompt remediation item, especially for internet-connected, safety-relevant, or broadly administered SCADA environments. Upgrade and credential rotation should be coordinated because historical logs may retain secrets after patching. Escalate priority if CVE-2026-34184 is also present or log access cannot be confidently bounded.
Technical view
CVE-2026-4901 is a CWE-532 sensitive-information logging flaw with CVSS 4.0 score 6.9. The supplied vector indicates network reachability, low complexity, high privileges required, no user interaction, and high confidentiality impact. Combined with CVE-2026-34184, an unauthorized user could reportedly access the sensitive logs.
Likely exposure
AlanWeb SCADA deployments older than the fixed 9.8.5 release may be exposed, but the supplied affected-version data is ambiguous and does not establish a precise vulnerable range. Prioritize systems whose logs are accessible to administrators, operators, support personnel, monitoring platforms, or through CVE-2026-34184.
Exploitation context
The source bundle provides no evidence of active exploitation, and this CVE is not identified as KEV. Exploitation requires access to the credential-bearing logs; the CVSS vector rates privileges required as high. CVE-2026-34184 may provide an unauthorized log-access path, increasing combined risk.
Researcher notes
The primary impact is credential disclosure through logging, mapped to CWE-532. CVSS 4.0 reports high vulnerable-system confidentiality impact without integrity or availability impact. The combined path involving CVE-2026-34184 is important, but its mechanics and affected overlap are not detailed in the supplied bundle. The exact vulnerable version range is also unresolved.
Mitigation direction
- Upgrade AlanWeb SCADA to version 9.8.5 or later after confirming vendor guidance.
- Restrict access to application logs and any systems receiving replicated log data.
- Rotate credentials that may have appeared in logs, prioritizing privileged and reusable accounts.
- Investigate and remediate CVE-2026-34184 wherever it affects the same deployment.
- Preserve necessary evidence securely before removing or sanitizing exposed historical logs.
Validation and detection
- Inventory AlanWeb SCADA deployments and record each installed version.
- Confirm every deployment is running version 9.8.5 or later.
- Verify newly generated logs no longer contain user credentials.
- Review permissions and access history for local, centralized, archived, and backup logs.
- Determine whether potentially exposed credentials were rotated and their sessions revoked.
- Assess the deployment separately for CVE-2026-34184.
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-532: 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-2026-4901 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
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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.
SSVC decision data
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N——CERT-PLVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://cert.pl/posts/2026/04/CVE-2026-4901/CVE reference, CERT-PL · third-party-advisory
- https://control-system.pl/CVE reference, CERT-PL · product
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.
Insertion of Sensitive Information into Log File
Insertion of Sensitive Information into Log File represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.