Security readout for executives and security teams
Plain-English summary
IBM Security Verify Information Queue versions 1.0.6 and 1.0.7 can let someone impersonate another user because session identifiers are updated incorrectly. The business risk is unauthorized access with high confidentiality and integrity impact, but the source bundle does not show active exploitation.
Executive priority
Treat this as high priority where the affected IBM component supports authentication-sensitive workflows. Prioritize confirmed 1.0.6 and 1.0.7 deployments, especially those reachable from shared internal networks.
Technical view
The issue is described as session identifier mishandling, consistent with session fixation. CVSS 3.0 is 7.5 with adjacent-network access, no privileges required, user interaction required, high attack complexity, changed scope, high confidentiality and integrity impact, and no availability impact.
Likely exposure
Exposure is limited to IBM Security Verify Information Queue 1.0.6 and 1.0.7 deployments. The CVSS vector indicates adjacent-network reachability and user interaction are required, so internet-wide exposure is not established by the provided sources.
Exploitation context
The CVE is not listed as CISA KEV in the bundle. CVSS temporal exploitability is marked unproven, and no cited source in the bundle states active exploitation or provides public exploitation evidence.
Researcher notes
Evidence is concise: affected versions, vulnerability class, CVSS vector, and IBM references are provided. No CWE is listed. The bundle does not name a fixed version or detailed mitigation, so validation should center on IBM advisory confirmation and local version inventory.
Mitigation direction
- Identify any IBM Security Verify Information Queue 1.0.6 or 1.0.7 deployments.
- Review IBM advisory guidance for the official remediation path.
- Apply IBM-provided fixes or upgrades where available.
- Restrict network access to affected systems until remediated.
- Retire or isolate vulnerable instances that cannot be updated.
Validation and detection
- Confirm the installed product and version on each deployment.
- Check IBM advisory and X-Force entry for remediation status.
- Verify affected instances are no longer running versions 1.0.6 or 1.0.7.
- Review access logs for suspicious impersonation or session anomalies.
- Document compensating controls for any temporarily exposed instance.
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-2021-20411 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:C/AV:A/PR:N/C:H/UI:R/I:H/A:N/AC:H/E:U/RL:O/RC:C
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:C/AV:A/PR:N/C:H/UI:R/I:H/A:N/AC:H/E:U/RL:O/RC:C1.25.8Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.5HighVector: CVSS:3.0/S:C/AV:A/PR:N/C:H/UI:R/I:H/A:N/AC:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6414777CVE reference · x_refsource_CONFIRM
- ibm-sviq-cve202120411-session-fixation (196191)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.