CVE-2020-25159
CVE-2020-25159 is a critical-severity vulnerability in Rtautomation 499es Ethernet/ip Adaptor Firmware with a CVSS 3.x base score of 9.8. 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Rtautomation 499es Ethernet/ip Adaptor Firmware
- Published:
- Last modified:
Description
499ES EtherNet/IP (ENIP) Adaptor Source Code is vulnerable to a stack-based buffer overflow, which may allow an attacker to send a specially crafted packet that may result in a denial-of-service condition or code execution.
Frequently asked questions
- What is CVE-2020-25159?
- 499ES EtherNet/IP (ENIP) Adaptor Source Code is vulnerable to a stack-based buffer overflow, which may allow an attacker to send a specially crafted packet that may result in a denial-of-service condition or code execution.
- How severe is CVE-2020-25159?
- CVE-2020-25159 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-25159 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-25159?
- CVE-2020-25159 affects Rtautomation 499es Ethernet/ip Adaptor Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-25159?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-25159 published?
- CVE-2020-25159 was published on 2020-11-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:rtautomation:499es_ethernet\/ip_adaptor_firmware:*:*:*:*:*:*:*:*
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