Security readout for executives and security teams
Plain-English summary
CVE-2018-1901 is an IBM WebSphere Application Server privilege issue where cached data could let an already authenticated remote attacker temporarily gain elevated rights. The business risk is moderate: it affects critical middleware, but sources indicate high attack complexity and required low-level privileges.
Executive priority
Treat as a scheduled remediation item for WebSphere environments, higher if systems are externally reachable or support sensitive applications. It does not have confirmed active exploitation in the supplied sources, but privilege elevation in middleware can affect business-critical applications.
Technical view
IBM WebSphere Application Server 8.5, 9.0, and Liberty are listed as affected. The flaw involves use of an incorrect cached value, enabling temporary privilege elevation. CVSS 3.0 score is 5.0 with network attack vector, high complexity, low privileges required, no user interaction, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely in organizations running IBM WebSphere Application Server 8.5, 9.0, or Liberty, especially where administrative or application endpoints are reachable over a network by authenticated users. Public internet exposure would raise priority, but the provided sources do not confirm default exposure conditions.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. CVSS exploit maturity is marked unproven. Exploitation requires low privileges and high attack complexity, so this is not presented as an unauthenticated mass-exploitation issue based on available evidence.
Researcher notes
Evidence is limited to CVE, IBM X-Force, and IBM support references. No CWE is listed in the bundle. The root cause is described only as incorrect cached value usage, so validation should focus on affected product/version state and IBM fix applicability rather than exploit reproduction.
Mitigation direction
- Review IBM advisory 10738727 for the official fix or fix pack guidance.
- Apply IBM-supported updates for affected WebSphere Application Server and Liberty versions.
- Restrict WebSphere administrative and application access to trusted networks and users.
- Remove unnecessary low-privilege accounts with access to affected environments.
- Monitor IBM support channels for updated remediation details.
Validation and detection
- Inventory WebSphere Application Server and Liberty deployments and record exact versions.
- Compare deployed versions against IBM advisory 10738727 guidance.
- Confirm relevant IBM fixes or fix packs are installed.
- Review access controls for authenticated users reaching WebSphere endpoints.
- Check logs for unusual privilege changes or administrative actions.
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.
CVE-2018-1901 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 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/A:L/AC:H/AV:N/C:L/I:L/PR:L/S:U/UI:N/E:U/RC:C/RL:O
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:3.0/A:L/AC:H/AV:N/C:L/I:L/PR:L/S:U/UI:N/E:U/RC:C/RL:O1.63.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5MediumVector: CVSS:3.0/A:L/AC:H/AV:N/C:L/I:L/PR:L/S:U/UI:N/E:U/RC:C/RL:O
Source materials
- CVE List V5 sourceCVE List V5
- ibm-websphere-cve20181901-priv-escalation(152530)CVE reference · vdb-entry, x_refsource_XF
- https://www.ibm.com/support/docview.wss?uid=ibm10738727CVE 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.