Security readout for executives and security teams
Plain-English summary
IBM Cognos Controller can expose login-related cookies in affected versions because they are not marked for secure-only transmission. A user who follows or visits an HTTP link could cause the browser to send sensitive cookie values over an insecure connection, where network snooping may capture them.
Executive priority
Prioritize remediation for affected internet-accessible or shared-network deployments. Business impact is mainly unauthorized disclosure of session-related values, not system takeover from the evidence provided. This is a moderate-risk issue requiring controlled remediation, not emergency response absent exploitation evidence.
Technical view
IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 do not set the Secure attribute on authorization tokens or session cookies. The issue is CWE-565 with CVSS 3.1 score 4.3: network exploitable, low complexity, no privileges, user interaction required, confidentiality impact only.
Likely exposure
Exposure is limited to deployments running IBM Cognos Controller 10.4.1, 10.4.2, or 11.0.0. Other versions are listed as unaffected in the supplied record. Risk depends on whether users can be induced to access HTTP links and whether traffic can be observed.
Exploitation context
The supplied sources describe a user-assisted cookie disclosure path through HTTP links and traffic snooping. The bundle does not show CISA KEV listing or cited evidence of active exploitation. Treat exploit status as unconfirmed.
Researcher notes
Evidence is narrow and consistent: missing Secure cookie attributes in specified IBM Cognos Controller versions. The source bundle does not provide patch version details, exploit proof, or telemetry. Validation should focus on affected-version presence and observed cookie attributes rather than assumptions.
Mitigation direction
- Check IBM advisory guidance for the affected Cognos Controller version.
- Apply any IBM-provided fix or configuration change for cookie handling.
- Enforce HTTPS-only access where supported by the deployment.
- Review session management controls after remediation.
- Monitor for suspicious session reuse or anomalous access.
Validation and detection
- Inventory Cognos Controller versions across production and test environments.
- Confirm whether any deployment runs 10.4.1, 10.4.2, or 11.0.0.
- Inspect session cookies for the Secure attribute in affected environments.
- Verify HTTP links cannot receive authorization or session cookies.
- Document IBM advisory status and remediation evidence.
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-565: 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-2021-20450 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
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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:R/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/7149876CVE reference · vendor-advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/196640CVE reference · vdb-entry
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.
Reliance on Cookies without Validation and Integrity Checking
Reliance on Cookies without Validation and Integrity Checking represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.