Security readout for executives and security teams
Plain-English summary
CVE-2021-22526 is an open redirect issue in Micro Focus NetIQ Access Manager before versions 4.5.4 and 5.0.1. An attacker with low privileges could potentially abuse redirect behavior to send users to untrusted destinations, supporting phishing or trust-abuse scenarios. The listed severity is medium, not a system takeover issue.
Executive priority
Treat this as a moderate-priority access-management hygiene issue. It is not described as actively exploited or critical, but affected identity infrastructure can amplify phishing and trust risks. Patch during the next controlled maintenance window, faster for internet-facing deployments.
Technical view
The vulnerability is categorized as CWE-601 open redirect. The CVSS 3.1 score is 4.9 with network attack vector, high complexity, low privileges required, changed scope, low confidentiality and integrity impact, and no availability impact. The source bundle names NetIQ Access Manager versions prior to 4.5.4 and 5.0.1 as affected.
Likely exposure
Exposure is likely limited to organizations running Micro Focus NetIQ Access Manager versions earlier than 4.5.4 or 5.0.1. Internet-facing authentication, SSO, or access-management portals deserve priority review because open redirects can undermine user trust around login flows.
Exploitation context
The bundle does not show CISA KEV listing or any cited evidence of active exploitation. The CVSS vector indicates exploitation requires low privileges and high complexity, with potential low confidentiality and integrity impact through redirect trust abuse rather than direct server compromise.
Researcher notes
The bundle provides the CVE metadata, CVSS vector, affected product family, and fixed-version boundary, but not detailed trigger conditions. Do not assume broad exploitability across unrelated Micro Focus products. Validate only against NetIQ Access Manager and vendor-documented affected versions.
Mitigation direction
- Upgrade NetIQ Access Manager to 4.5.4, 5.0.1, or later vendor-supported releases.
- Review Micro Focus release notes and KB guidance before production rollout.
- Prioritize externally reachable access-management portals and authentication flows.
- Check vendor guidance for any configuration-specific mitigation not included in the bundle.
Validation and detection
- Inventory all NetIQ Access Manager deployments and exact software versions.
- Confirm no instance remains below 4.5.4 or 5.0.1.
- Review authentication and redirect logs for unusual external destinations.
- Validate redirect allow-list or equivalent controls after upgrade.
- Document compensating controls where upgrade timing is delayed.
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-601: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2021-22526 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
- 4.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/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:H/PR:L/UI:N/S:C/C:L/I:L/A:N1.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.9MediumVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.microfocus.com/documentation/access-manager/5.0/accessmanager501-release-notes/accessmanager501-release-notes.htmlCVE reference · x_refsource_CONFIRM
- https://support.microfocus.com/kb/doc.php?id=7025257CVE reference · x_refsource_CONFIRM
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.
URL Redirection to Untrusted Site ('Open Redirect')
URL Redirection to Untrusted Site ('Open Redirect') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.