How severe is CVE-2018-19016?

CVE-2018-19016 has a CVSS 3.x base score of 7.5, 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 none, and availability high.

Is CVE-2018-19016 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-19016?

CVE-2018-19016 primarily affects Rockwellautomation Ethernet/ip Web Server Module 1756-eweb. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-19016?

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-2018-19016 published?

CVE-2018-19016 was published on 2019-03-27 and last updated on 2026-06-17.

CVE-2018-19016

CVE-2018-19016 is a high-severity vulnerability in Rockwellautomation Ethernet/ip Web Server Module 1756-eweb with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Rockwellautomation Ethernet/ip Web Server Module 1756-eweb
Published: 2019-03-27
Last modified: 2026-06-17

Description

Rockwell Automation EtherNet/IP Web Server Modules 1756-EWEB (includes 1756-EWEBK) Version 5.001 and earlier, and CompactLogix 1768-EWEB Version 2.005 and earlier. A remote attacker could send a crafted UDP packet to the SNMP service causing a denial-of-service condition to occur until the affected product is restarted.

Frequently asked questions

What is CVE-2018-19016?: Rockwell Automation EtherNet/IP Web Server Modules 1756-EWEB (includes 1756-EWEBK) Version 5.001 and earlier, and CompactLogix 1768-EWEB Version 2.005 and earlier. A remote attacker could send a crafted UDP packet to the SNMP service causing a denial-of-service condition to occur until the affected product is restarted.
How severe is CVE-2018-19016?: CVE-2018-19016 has a CVSS 3.x base score of 7.5, 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 none, and availability high.
Is CVE-2018-19016 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-19016?: CVE-2018-19016 primarily affects Rockwellautomation Ethernet/ip Web Server Module 1756-eweb. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-19016?: 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-2018-19016 published?: CVE-2018-19016 was published on 2019-03-27 and last updated on 2026-06-17.

References

https://ics-cert.us-cert.gov/advisories/ICSA-19-036-02

Affected products (2)

cpe:2.3:a:rockwellautomation:ethernet\/ip_web_server_module_1756-eweb:*:*:*:*:*:*:*:*
cpe:2.3:a:rockwellautomation:ethernet\/ip_web_server_module_1768-eweb:*:*:*:*:*:*:*:*

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