Security readout for executives and security teams
Plain-English summary
Certain Ovarro TBox RTUs can create authentication tokens from weak randomness and predictable time values. A knowledgeable attacker may be able to guess a valid token and authenticate. The impact is mainly confidentiality, with no integrity or availability impact identified in the supplied CVSS data.
Executive priority
Prioritize this for OT environments using Ovarro TBox RTUs, especially where remote access exists. The rating is moderate because exploitation is higher complexity and no active exploitation is cited, but successful authentication bypass could expose sensitive operational data.
Technical view
CVE-2023-36610 is CWE-331 in Ovarro TBox RTU software token generation. The random seed is not initialized correctly, and predictable time-based token components reduce entropy. CVSS 3.1 is 5.9, network reachable, no privileges or user interaction, high attack complexity, and high confidentiality impact.
Likely exposure
Exposure is most relevant to organizations operating the listed Ovarro TBox RTUs: MS-CPU32, MS-CPU32-S2, LT2, TG2, and RM2. Risk increases if management or authentication interfaces are reachable from untrusted networks. The supplied version data is incomplete and should be verified against vendor guidance.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation is described as brute forcing a predictable software token to authenticate, but CVSS rates attack complexity high. Treat this as credible OT authentication risk, not confirmed widespread exploitation.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, affected product list, CWE-331, and CISA advisory reference. The bundle does not provide exact vulnerable firmware ranges, proof of exploitation, or named fixed versions. Avoid assuming broader Ovarro product impact without vendor confirmation.
Mitigation direction
- Check CISA and Ovarro guidance for affected firmware and available fixes.
- Inventory listed TBox RTUs and confirm deployed model and firmware versions.
- Restrict RTU management access to trusted OT networks only.
- Place exposed interfaces behind firewalls, VPNs, or jump hosts.
- Monitor authentication activity for unusual failures or unexpected successful logins.
Validation and detection
- Compare asset inventory against the affected Ovarro TBox RTU model list.
- Verify whether any RTU authentication interfaces are reachable from untrusted networks.
- Review vendor advisory status for firmware applicability and remediation instructions.
- Check logs for abnormal authentication patterns or unknown administrative access.
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-331: 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-36610 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A: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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N2.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-180-03CVE reference · 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.
Insufficient Entropy
Insufficient Entropy represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.