Security readout for executives and security teams
Plain-English summary
This flaw affects WAGO web-based management on listed controller and coupler products. A remote unauthenticated attacker can plant crafted data, and the overflow is triggered when an authenticated user later views it. The source says successful exploitation could give full device access, making exposed operational devices a high-priority risk.
Executive priority
Treat this as high priority for OT and building automation environments. The business risk is unauthorized device control, but urgency depends on whether affected WAGO management interfaces are reachable and whether vendor-confirmed vulnerable firmware is present.
Technical view
CVE-2015-10123 is a CWE-120 buffer copy issue in WAGO WBM. The CVSS 3.1 score is 8.8, with network attack vector, no attacker privileges required, user interaction required, and high confidentiality, integrity, and availability impact. The provided metadata does not clearly identify exact vulnerable firmware ranges.
Likely exposure
Most relevant exposure is WAGO Controller BACnet/IP, Controller BACnet MS/TP, Ethernet Controller 3rd Generation, and Fieldbus Coupler Ethernet 3rd Generation where WBM is reachable. The bundle lists version metadata as “0” with default status “unaffected,” so product and firmware scoping needs vendor confirmation.
Exploitation context
The bundle does not cite CISA KEV listing or active exploitation. The described scenario requires remote packet delivery by an unauthenticated attacker and later interaction by an authenticated WBM user. The source states the outcome can be full device access if the overflow is triggered.
Researcher notes
The source bundle supports high severity and the attack preconditions, but not active exploitation or a specific fixed version. The affected-version data appears incomplete or normalized oddly, so validation should pivot to the VDE advisory and vendor product documentation.
Mitigation direction
- Check the VDE/WAGO advisory for fixed firmware, workarounds, and exact affected versions.
- Inventory listed WAGO devices and confirm model and firmware against vendor guidance.
- Restrict WBM access to trusted administration networks only.
- Avoid exposing affected device management interfaces to the internet.
- Review device logs and configuration changes where exposure existed.
Validation and detection
- Search asset inventory for the listed WAGO controller and coupler product names.
- Confirm whether WBM is enabled and reachable from untrusted networks.
- Verify installed firmware against the vendor advisory, not only CVE metadata.
- Review user access paths to WBM pages on exposed devices.
- Document uncertainty where product version metadata is incomplete.
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-120: 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-2015-10123 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:N/UI:R/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:N/UI:R/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:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://cert.vde.com/en/advisories/VDE-2023-039/CVE 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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.