CVE-2023-7243
CVE-2023-7243 is a critical-severity vulnerability in Cisa Icsnpp-ethercat 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)
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-59424
- Weakness: CWE-787
- Affected product: Cisa Icsnpp-ethercat
- Published:
- Last modified:
Description
Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write while analyzing specific Ethercat datagrams. This could allow an attacker to cause arbitrary code execution.
Frequently asked questions
- What is CVE-2023-7243?
- Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write while analyzing specific Ethercat datagrams. This could allow an attacker to cause arbitrary code execution.
- How severe is CVE-2023-7243?
- CVE-2023-7243 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-2023-7243 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-7243?
- CVE-2023-7243 affects Cisa Icsnpp-ethercat. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-7243?
- 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.
- Does CVE-2023-7243 have an EU (EUVD) identifier?
- Yes. CVE-2023-7243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59424.
- When was CVE-2023-7243 published?
- CVE-2023-7243 was published on 2024-03-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cisa:icsnpp-ethercat:*:*:*:*:*:zeek:*:*
More vulnerabilities in Cisa Icsnpp-ethercat
- CVE-2023-7244 — Critical (CVSS 9.8): Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are…
- CVE-2023-7242 — High (CVSS 8.2): Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are…
All CVEs affecting Cisa Icsnpp-ethercat →
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