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CVE Record

CVE-2023-39003: OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 was discovered to contain insecur...

OPNsense Community Edition before 23.7 and Business Edition before 23.4.2 was discovered to contain insecure permissions in the directory /tmp.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This CVE concerns insecure permissions on the /tmp directory in OPNsense appliances. The public record names OPNsense Community Edition before 23.7 and Business Edition before 23.4.2. Business urgency depends on whether vulnerable versions remain in use, because the sources do not provide CVSS, impact detail, or confirmed exploitation.

Executive priority

Treat this as a targeted firewall-platform hygiene issue, not a confirmed emergency from the supplied evidence. Prioritize version verification and planned remediation, especially for perimeter OPNsense deployments.

Technical view

CVE-2023-39003 describes insecure /tmp directory permissions in OPNsense Community Edition before 23.7 and Business Edition before 23.4.2. The supplied sources do not identify a CWE, CVSS score, attack prerequisites, privilege requirements, or concrete post-exploitation impact.

Likely exposure

Organizations running OPNsense Community Edition before 23.7 or Business Edition before 23.4.2 are potentially exposed. No other affected products are supported by the supplied sources.

Exploitation context

The CVE is not listed as KEV in the bundle, and no supplied source confirms active exploitation. The sources also do not describe exploitability conditions, required access, or whether the issue is remotely reachable.

Researcher notes

Evidence is sparse. The public bundle identifies affected version ranges and the insecure /tmp permission theme, but omits CVSS, CWE, exploit status, attack path, and impact details. Avoid assuming remote code execution, privilege escalation, or weaponized exploitation without additional vendor or researcher evidence.

Mitigation direction

  • Inventory OPNsense appliances and record edition and version.
  • Upgrade Community Edition to 23.7 or later where applicable.
  • Upgrade Business Edition to 23.4.2 or later where applicable.
  • Review current OPNsense vendor guidance before making production changes.
  • Prioritize externally exposed or shared-administration firewalls first.

Validation and detection

  • Confirm no appliance remains below the named fixed version threshold.
  • Review /tmp permissions against vendor-supported defaults after upgrade.
  • Check change records for completed upgrades on all OPNsense systems.
  • Monitor vendor advisories for added impact or remediation detail.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2023-39003 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
2ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.