Security readout for executives and security teams
Plain-English summary
This vulnerability affects Lanner IAC-AST2500A standard firmware 1.10.0. Weak session handling could let an attacker hijack a user session after user interaction, creating unauthorized access risk to a management interface. Public sources rate it medium severity, not an emergency by itself, but important where affected devices manage OT or IoT infrastructure.
Executive priority
Treat as a moderate operational risk. Prioritize review if affected Lanner devices support critical OT, IoT, or remote management functions, especially where administrators access them from shared or exposed networks.
Technical view
CVE-2021-46279 maps to CWE-384 and CWE-613: session fixation and insufficient session expiration. The CVSS 3.1 score is 5.8, with network attack vector, high complexity, no privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to Lanner IAC-AST2500A devices running standard firmware version 1.10.0. Risk is higher if the BMC or management interface is reachable from untrusted networks or used by privileged administrators.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not listed as KEV. The CVSS vector indicates exploitation is not trivial: it requires user interaction and high attack complexity, but does not require prior authentication.
Researcher notes
Evidence is narrow: affected product, version, CWE mapping, and CVSS are clear, but the bundle does not include a named patch level or exploit confirmation. Avoid broadening impact beyond Lanner IAC-AST2500A standard firmware 1.10.0.
Mitigation direction
- Identify Lanner IAC-AST2500A devices and confirm firmware version.
- Check Lanner or Nozomi guidance for available vendor fixes or mitigations.
- Restrict management interface access to trusted administrative networks.
- Review session timeout and logout practices where configurable.
- Monitor management access logs for unusual session activity.
Validation and detection
- Inventory affected devices and record firmware version 1.10.0 presence.
- Confirm management interfaces are not exposed to the internet.
- Review access controls around BMC administration paths.
- Check vendor advisories for updated firmware or formal mitigation guidance.
- Validate logging captures administrative login and session 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-384: 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 lookupCWE-613: 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-2021-46279 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
- 5.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L
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:H/PR:N/UI:R/S:C/C:L/I:L/A:L1.63.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.8MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L
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.
Session Fixation
Session Fixation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Insufficient Session Expiration
Insufficient Session Expiration represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.