Security readout for executives and security teams
Plain-English summary
CVE-2023-6523 is an authorization bypass in ExtremePacs Extreme XDS. A logged-in user may be able to access or affect data they should not control by manipulating a user-controlled key. The CVSS score is high at 8.8, with potential confidentiality, integrity, and availability impact.
Executive priority
Treat as urgent for environments using Extreme XDS, especially where sensitive records are handled. Validate exposure quickly and plan remediation because the vulnerability can affect data confidentiality, integrity, and availability.
Technical view
The issue is CWE-639, Authorization Bypass Through User-Controlled Key, affecting Extreme XDS before 3914. CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating network access, low complexity, and required low privileges without user interaction.
Likely exposure
Organizations running ExtremePacs Extreme XDS versions before 3914 are the stated exposed population. Risk is higher if the application is reachable by many internal users or from untrusted networks. Source metadata is limited and contains some inconsistency.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. The vulnerability is still concerning because exploitation requires only a valid low-privileged account and network reachability, based on the CVSS vector.
Researcher notes
Evidence is limited to CVE and government advisory references. One USOM URL is marked broken in the bundle. The affected metadata lists version “0” while the description states “before 3914,” so confirm product build mapping with authoritative vendor guidance.
Mitigation direction
- Identify all ExtremePacs Extreme XDS deployments and versions.
- Upgrade Extreme XDS to version 3914 or later if confirmed by vendor guidance.
- If upgrade timing is uncertain, consult the vendor or national advisory for current remediation instructions.
- Limit network access to Extreme XDS to trusted users and systems.
- Review role and authorization controls for accounts with access.
Validation and detection
- Confirm whether any Extreme XDS instance is below version 3914.
- Check whether Extreme XDS is reachable from untrusted networks.
- Review application logs for unusual cross-user or cross-record access patterns.
- Confirm remediation status against CVE-2023-6523 in asset records.
- Monitor vendor and government advisories for updated details.
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-639: 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 lookupPrivilege 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-2023-6523 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.
SSVC decision data
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:H2.85.9TR-CERTVulnerability 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.usom.gov.tr/bildirim/tr-24-0276CVE reference, TR-CERT · government-resource, broken-link
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-24-0276CVE reference, TR-CERT · government-resource
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.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.