Security readout for executives and security teams
Plain-English summary
IBM WebSphere Application Server traditional has a privilege escalation flaw affecting versions 7.0, 8.0, 8.5, and 9.0. A lower-privileged user could gain higher administrative impact when token-based authentication is used for an admin request over the SOAP connector. The issue is high severity because successful exploitation can affect confidentiality, integrity, and availability.
Executive priority
Treat this as a high-priority legacy middleware risk. It can raise attacker privileges inside a critical application platform, and affected versions include older releases that may be hard to patch. Prioritize externally reachable or shared administrative environments first.
Technical view
CVE-2020-4276 is a network-reachable privilege escalation in IBM WebSphere Application Server traditional SOAP admin handling under token-based authentication. CVSS 3.0 is 7.5 with low privileges required, no user interaction, high attack complexity, and high C/I/A impact. The source bundle does not provide exploit mechanics, CWE mapping, or detailed fix levels.
Likely exposure
Exposure is most likely in environments running IBM WebSphere Application Server traditional 7.0, 8.0, 8.5, or 9.0 where the SOAP connector supports administrative requests using token-based authentication.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. CVSS marks exploit maturity as unproven and attack complexity as high, but the required privileges are low and the impact is severe if exploited.
Researcher notes
Focus validation on version, product line, admin SOAP connector exposure, and token-based authentication. The public bundle identifies the vulnerable condition and severity but does not provide CWE, exploit details, or specific fixed build numbers, so vendor advisory review is required.
Mitigation direction
- Review IBM advisory 6118222 for applicable fix packs or interim fixes.
- Prioritize remediation for internet-reachable or broadly reachable administrative SOAP connectors.
- Restrict administrative connector access to trusted management networks where possible.
- Review token-based authentication use for WebSphere administrative requests.
- Document exceptions and compensating controls for unsupported WebSphere versions.
Validation and detection
- Inventory WebSphere Application Server traditional deployments and record exact versions.
- Confirm whether affected systems use SOAP connector administrative requests.
- Check whether token-based authentication is enabled for administrative flows.
- Verify installed fix pack or interim fix status against IBM guidance.
- Confirm administrative SOAP interfaces are not exposed to untrusted networks.
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.
Credential 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-4276 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 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/PR:L/UI:N/A:H/I:H/AC:H/AV:N/S:U/C:H/RL:O/RC:C/E:U
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/PR:L/UI:N/A:H/I:H/AC:H/AV:N/S:U/C:H/RL:O/RC:C/E:U1.65.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.5HighVector: CVSS:3.0/PR:L/UI:N/A:H/I:H/AC:H/AV:N/S:U/C:H/RL:O/RC:C/E:U
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6118222CVE reference · x_refsource_CONFIRM
- ibm-websphere-cve20204276-priv-escalation (175984)CVE reference · vdb-entry, x_refsource_XF
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.