Security readout for executives and security teams
Plain-English summary
IBM InfoSphere Information Server 11.7 can mishandle XML input in a way that lets a remote attacker read sensitive information or exhaust memory. The CVSS score is critical because exploitation is network-accessible, low complexity, unauthenticated, and requires no user interaction.
Executive priority
Treat this as urgent for confirmed IBM InfoSphere Information Server 11.7 deployments. Prioritize internet-facing or partner-facing systems first because the issue is unauthenticated and can affect confidentiality and availability.
Technical view
This is a CWE-611 XML External Entity injection issue in XML data processing. The published CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H, indicating high confidentiality and availability impact, with no stated integrity impact.
Likely exposure
Exposure is limited to environments running IBM InfoSphere Information Server 11.7, especially where XML-processing functionality is reachable from untrusted networks or users. The source bundle does not identify other affected versions.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. They do support remote, unauthenticated exploitability in principle based on the CVSS vector and IBM/CVE description, but provide no exploit-status evidence.
Researcher notes
Evidence is sufficient to classify severity and affected product, but incomplete for exploit activity and exact fix details. Validate exposure through asset inventory and architecture review rather than active probing. Use IBM guidance as the authoritative remediation source.
Mitigation direction
- Inventory IBM InfoSphere Information Server deployments and identify version 11.7 instances.
- Review IBM advisory 6829373 for vendor remediation or interim guidance.
- Prioritize remediation for systems reachable from untrusted networks.
- Restrict access to XML-processing interfaces where business operations allow.
- Monitor for memory exhaustion or unusual sensitive-file access indicators.
Validation and detection
- Verify installed IBM InfoSphere Information Server version against asset records.
- Confirm whether exposed workflows accept XML data from untrusted sources.
- Check whether IBM advisory remediation has been applied.
- Review logs for abnormal XML-processing failures or resource exhaustion.
- Document compensating controls if vendor remediation is pending.
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-611: 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-2022-40747 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
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H3.95.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6829373CVE reference
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.
Improper Restriction of XML External Entity Reference
Improper Restriction of XML External Entity Reference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.