CVE-2023-26150
CVE-2023-26150 is a medium-severity vulnerability in Freeopcua Opcua-asyncio 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-287.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (36th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Freeopcua Opcua-asyncio
- Published:
- Last modified:
Description
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. **Note:** This issue is a result of missing checks for services that require an active session.
Frequently asked questions
- What is CVE-2023-26150?
- Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. **Note:** This issue is a result of missing checks for services that require an active session.
- How severe is CVE-2023-26150?
- CVE-2023-26150 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2023-26150 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-26150?
- CVE-2023-26150 affects Freeopcua Opcua-asyncio. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-26150?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-26150 published?
- CVE-2023-26150 was published on 2023-10-03 and last updated on 2026-06-17.
References
- https://gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121
- https://github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a
- https://github.com/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde513
- https://github.com/FreeOpcUa/opcua-asyncio/issues/1014
- https://github.com/FreeOpcUa/opcua-asyncio/pull/1015
- https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96
- https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435
Affected products (1)
- cpe:2.3:a:freeopcua:opcua-asyncio:*:*:*:*:*:python:*:*
More vulnerabilities in Freeopcua Opcua-asyncio
- CVE-2023-26151 — Medium (CVSS 5.3): Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send…
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Other CWE-287 (Improper Authentication) vulnerabilities
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- CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
- CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
- CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…
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