Security readout for executives and security teams
Plain-English summary
Egerie Risk Manager v4.0.5 has a high-severity authentication integrity flaw. A low-privileged user may be able to change JWT session data and gain higher privileges. For organizations using this product, the business risk is unauthorized access to sensitive risk-management data and administrative functions.
Executive priority
Treat this as a high-priority remediation item if Egerie Risk Manager v4.0.5 is in use, especially where many users have application accounts or the service is broadly reachable.
Technical view
The CVE describes a JWT signature mechanism bypass in Egerie Risk Manager v4.0.5. An authenticated attacker with low privileges can tamper with JWT payload values, causing privilege escalation. CVSS 3.1 is 8.8 with network attack vector, low complexity, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure appears limited to environments running Egerie Risk Manager v4.0.5. The source bundle does not provide CPEs, affected-version ranges, deployment prerequisites, or patch status, so teams should confirm product use and vendor guidance directly.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. The CVSS vector indicates the issue is remotely reachable over the network but requires an authenticated low-privileged account. Public detail is limited to the CVE records and the referenced advisory.
Researcher notes
Source metadata is sparse: affected vendor/product fields are n/a, no CWE is listed, and the bundle names only v4.0.5. Avoid assuming other versions are affected. The core issue is JWT payload tampering despite the intended signature mechanism.
Mitigation direction
- Confirm whether Egerie Risk Manager v4.0.5 is deployed.
- Check Egerie or vendor guidance for fixed versions or official mitigations.
- Restrict application access to trusted users and networks where feasible.
- Review and tighten role assignments for low-privileged accounts.
- Monitor for unusual privilege changes or anomalous session behavior.
Validation and detection
- Inventory Egerie Risk Manager instances and record exact versions.
- Verify whether JWT validation behavior is covered by vendor updates.
- Review logs for unexpected privilege escalation or administrative actions.
- Confirm low-privileged users cannot access higher-privilege functions.
- Document compensating controls if no vendor fix is available.
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.
Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-27001 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/post-cyberlabs/CVE-Advisory/blob/main/CVE-2023-27001.pdfCVE 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.