Security readout for executives and security teams
Plain-English summary
CVE-2023-40264 is an authenticated path traversal issue in Atos Unify OpenScape Voice Trace Manager V8 before V8 R0.9.11. A logged-in user may be able to access unintended files through the web user interface. The CVSS score is medium because it requires credentials and is rated for limited confidentiality impact only.
Executive priority
Treat this as a moderate-priority remediation item. It is not described as actively exploited, but it can expose information to authenticated users. Prioritize affected internet-facing or broadly accessible administrative interfaces first.
Technical view
The issue is classified as CWE-22 path traversal. CVSS 3.1 is 4.3: network-reachable, low attack complexity, low privileges required, no user interaction, unchanged scope, low confidentiality impact, and no integrity or availability impact. The public bundle identifies affected versions as OpenScape Voice Trace Manager V8 before V8 R0.9.11.
Likely exposure
Exposure is likely limited to organizations running OpenScape Voice Trace Manager V8 before V8 R0.9.11, especially where the user interface is reachable by many internal users or externally reachable after authentication.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The issue requires authenticated access, so risk depends heavily on account control, UI exposure, and whether lower-privileged users can reach sensitive files.
Researcher notes
Evidence is concise. The CVE affected fields are generic, but the description and referenced advisory identify Atos Unify OpenScape Voice Trace Manager V8 before V8 R0.9.11. Do not assume broader OpenScape products are affected without vendor confirmation.
Mitigation direction
- Upgrade OpenScape Voice Trace Manager V8 to V8 R0.9.11 or later.
- Review the Unify advisory for vendor-specific remediation guidance.
- Restrict user interface access to trusted networks and required users.
- Audit and remove unnecessary Trace Manager accounts.
- Monitor authenticated access for unusual file access errors or denied requests.
Validation and detection
- Inventory systems running OpenScape Voice Trace Manager V8.
- Confirm installed versions are not earlier than V8 R0.9.11.
- Verify the Trace Manager user interface is not broadly exposed.
- Review account roles with access to the user interface.
- Check application and web logs for suspicious authenticated file access activity.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-40264 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:L/UI:N/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:L/UI:N/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:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://networks.unify.com/security/advisories/OBSO-2305-02.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.