Security readout for executives and security teams
Plain-English summary
Meinberg LANTIME devices running older firmware have a web-interface flaw that lets an authenticated administrator read or delete files outside intended controls. This can affect confidentiality, integrity, and availability of time infrastructure, but the source bundle does not show unauthenticated access or active exploitation.
Executive priority
Treat this as a high-priority infrastructure maintenance issue where Meinberg LANTIME devices support critical timing. Prioritize patching exposed or broadly administered devices first, then reduce administrative access paths.
Technical view
CVE-2021-46902 is a CWE-22 path validation issue in the LTOS-Web-Interface for Meinberg LANTIME-Firmware before 6.24.029 and version 7 before 7.04.008. CVSS 3.1 is 7.2: network reachable, low complexity, high privileges required, no user interaction, with high CIA impact.
Likely exposure
Organizations using Meinberg LANTIME firmware branches earlier than 6.24.029 or 7.04.008 are the likely exposure group. Risk is highest where LTOS-Web-Interface administrative access is reachable from broad management networks.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. Exploitation requires high privileges, so compromised or overbroad administrator accounts are the main practical concern.
Researcher notes
The source bundle’s affected product fields are n/a, so affected scope should be taken from the CVE description and Meinberg advisory. Do not assume unauthenticated exploitation, broader product families, or confirmed exploitation without additional evidence.
Mitigation direction
- Update affected LANTIME firmware to 6.24.029, 7.04.008, or later per Meinberg guidance.
- Restrict LTOS-Web-Interface administrative access to trusted management networks only.
- Review administrator accounts and remove unnecessary privileged access.
- Check Meinberg advisory for branch-specific upgrade instructions and constraints.
Validation and detection
- Inventory Meinberg LANTIME devices and record firmware branch and version.
- Confirm no device runs firmware before 6.24.029 or 7.04.008.
- Review web-interface administrator access paths and network exposure.
- Inspect logs for unusual administrative file access or deletion events.
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 lookupCVE-2021-46902 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
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.