CVE-2018-18958
CVE-2018-18958 is a medium-severity vulnerability in Opnsense with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 4.0
- EPSS exploit prediction: 1% (46th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-284
- Affected product: Opnsense
- Published:
- Last modified:
Description
OPNsense 18.7.x before 18.7.7 has Incorrect Access Control.
Frequently asked questions
- What is CVE-2018-18958?
- OPNsense 18.7.x before 18.7.7 has Incorrect Access Control.
- How severe is CVE-2018-18958?
- CVE-2018-18958 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2018-18958 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-18958?
- CVE-2018-18958 affects Opnsense. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-18958?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-18958 published?
- CVE-2018-18958 was published on 2019-06-17 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*
More vulnerabilities in Opnsense
- CVE-2023-27152 — Critical (CVSS 9.8): DECISO OPNsense 23.1 does not impose rate limits for authentication, allowing attackers to perform a brute-force attack…
- CVE-2023-39008 — Critical (CVSS 9.8): A command injection vulnerability in the component /api/cron/settings/setJob/ of OPNsense Community Edition before 23.7…
- CVE-2023-39004 — Critical (CVSS 9.8): Insecure permissions in the configuration directory (/conf/) of OPNsense Community Edition before 23.7 and Business…
- CVE-2023-39001 — Critical (CVSS 9.8): A command injection vulnerability in the component diag_backup.php of OPNsense Community Edition before 23.7 and…
- CVE-2023-39007 — Critical (CVSS 9.6): /ui/cron/item/open in the Cron component of OPNsense Community Edition before 23.7 and Business Edition before 23.4.2…
- CVE-2026-45158 — Critical (CVSS 9.1): OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the…
Other CWE-284 (Improper Access Control) vulnerabilities
- CVE-2026-50746 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi…
- CVE-2026-46978 — Critical (CVSS 10.0): Vulnerability in the Oracle Solaris product of Oracle Systems (component: Remote Administration Daemon). The…
- CVE-2026-35308 — Critical (CVSS 10.0): Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Centralized Third Party Jars).…
- CVE-2026-35307 — Critical (CVSS 10.0): Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that…
- CVE-2026-46695 — Critical (CVSS 10.0): Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers…
- CVE-2026-46840 — Critical (CVSS 10.0): Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are…
Browse all CWE-284 (Improper Access Control) vulnerabilities →