Security readout for executives and security teams
Plain-English summary
LibreNMS 1.46 has an authenticated SQL injection issue in a MAC accounting graph function. A logged-in attacker could use it to pull sensitive database information. This matters because LibreNMS often holds network inventory and monitoring data. Public exploit information exists, but the provided sources do not show confirmed active exploitation.
Executive priority
Treat as high priority for any LibreNMS 1.46 system, especially if internet-facing or broadly accessible internally. The issue can expose database contents and has public exploit information. Prioritize inventory, access restriction, and vendor-guided upgrade or remediation.
Technical view
CVE-2020-36947 is CWE-89 SQL injection in LibreNMS 1.46. The MAC accounting graph endpoint improperly handles the sort parameter, enabling authenticated remote attackers to extract database contents through time-based blind SQL injection. The supplied CVSS v4 score is 7.1 high, with low attack complexity and low privileges required.
Likely exposure
Organizations running LibreNMS 1.46 are the known exposed population. Risk is higher where LibreNMS is reachable by many internal users, externally accessible, or uses shared/weak accounts. The sources do not identify other affected versions.
Exploitation context
ExploitDB and VulnCheck references indicate public exploit information is available. Exploitation requires an authenticated LibreNMS user, according to the supplied description and CVSS privileges requirement. The vulnerability is not marked KEV, and no cited source confirms active exploitation.
Researcher notes
Evidence supports an authenticated SQL injection in LibreNMS 1.46 only. Public exploit reference exists, but active exploitation is not established by KEV or the cited sources. The bundle does not name a specific patched version, so remediation should be tied to current LibreNMS guidance.
Mitigation direction
- Identify any LibreNMS 1.46 deployments.
- Check LibreNMS vendor, GitHub, and community guidance for fixed versions or remediation.
- Upgrade or apply vendor-recommended remediation when confirmed.
- Restrict LibreNMS access to trusted administrators and networks.
- Review and remove unnecessary LibreNMS user accounts.
- Monitor LibreNMS and database logs for suspicious graph requests.
Validation and detection
- Confirm the deployed LibreNMS version from asset inventory or application administration.
- Verify whether MAC accounting graph functionality is enabled or accessible.
- Review user accounts with access to LibreNMS graphing features.
- Check logs for unusual requests involving the graph sort parameter.
- After remediation, confirm the instance no longer reports version 1.46.
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-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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 lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-36947 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA: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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
7.1HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49246CVE reference · exploit
- LibreNMS Official WebsiteCVE reference · product
- LibreNMS GitHub RepositoryCVE reference · product
- LibreNMS CommunityCVE reference · product
- VulnCheck Advisory: LibreNMS 1.46 - MAC Accounting Graph Authenticated SQL InjectionCVE reference · third-party-advisory
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 Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.