Security readout for executives and security teams
Plain-English summary
IBM DataPower Gateway versions 2018.4.1.0 through 2018.4.1.12 can be made unavailable by a remote unauthenticated attacker. The issue affects availability, not stated confidentiality or integrity. For organizations using DataPower on exposed traffic paths, the business risk is service disruption.
Executive priority
Prioritize this as a high availability risk for affected DataPower gateways. It warrants timely remediation where gateways support critical APIs, authentication paths, payments, customer portals, or partner integrations.
Technical view
The vulnerability is a network-reachable denial of service in IBM DataPower Gateway triggered by a chunked transfer-encoding HTTP/2 request. CVSS 3.0 is 7.5: low complexity, no privileges, no user interaction, high availability impact, and no stated confidentiality or integrity impact.
Likely exposure
Exposure is most likely where IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 handles HTTP/2 traffic, especially on internet-facing or partner-facing API gateways. The source bundle does not identify other affected products or versions.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle, and the CVSS exploit maturity is unproven. Treat it as remotely reachable and operationally important, but do not assume active exploitation without additional evidence.
Researcher notes
No CWE is supplied, and the bundle does not include root-cause detail beyond the HTTP/2 chunked transfer-encoding condition. Analysis should stay bounded to remote denial of service against the listed IBM DataPower Gateway release range.
Mitigation direction
- Inventory all IBM DataPower Gateway instances and confirm running versions.
- Review IBM advisory guidance for fixed releases or vendor-approved mitigation.
- Prioritize remediation for internet-facing or critical API gateway deployments.
- Reduce unnecessary external exposure while remediation is planned.
- Monitor gateway availability and restart patterns during the remediation window.
Validation and detection
- Compare deployed DataPower versions against 2018.4.1.0 through 2018.4.1.12.
- Confirm whether exposed services accept HTTP/2 traffic through affected gateways.
- Verify remediation status against IBM’s advisory, not inferred version assumptions.
- Review outage, crash, and availability logs for unusual gateway instability.
- Document remaining affected instances with owners and remediation dates.
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-2020-4581 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/S:U/UI:N/AC:L/C:N/I:N/PR:N/A:H/AV:N/RC:C/RL:O/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/S:U/UI:N/AC:L/C:N/I:N/PR:N/A:H/AV:N/RC:C/RL:O/E:U3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.5HighVector: CVSS:3.0/S:U/UI:N/AC:L/C:N/I:N/PR:N/A:H/AV:N/RC:C/RL:O/E:U
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6334707CVE reference · x_refsource_CONFIRM
- ibm-datapower-cve20204581-dos (184441)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.