CVE-2021-27478
CVE-2021-27478 is a high-severity vulnerability in Opener Project Opener with a CVSS 3.x base score of 8.2. 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-681.
Key facts
- Severity: High (CVSS 3.x base score 8.2)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (60th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-681
- Affected product: Opener Project Opener
- Published:
- Last modified:
Description
A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may cause a denial-of-service condition.
Frequently asked questions
- What is CVE-2021-27478?
- A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may cause a denial-of-service condition.
- How severe is CVE-2021-27478?
- CVE-2021-27478 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
- Is CVE-2021-27478 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27478?
- CVE-2021-27478 affects Opener Project Opener. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-27478?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-27478 published?
- CVE-2021-27478 was published on 2022-05-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:opener_project:opener:*:*:*:*:*:*:*:*
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All CVEs affecting Opener Project Opener →
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