How severe is CVE-2017-12093?

CVE-2017-12093 has a CVSS 3.x base score of 5.3, rated medium 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 low.

Is CVE-2017-12093 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12093?

CVE-2017-12093 affects Rockwellautomation Micrologix 1400 B Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-12093?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-12093 published?

CVE-2017-12093 was published on 2018-04-05 and last updated on 2026-06-17.

CVE-2017-12093

CVE-2017-12093 is a medium-severity vulnerability in Rockwellautomation Micrologix 1400 B Firmware with a CVSS 3.x base score of 5.3. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Rockwellautomation Micrologix 1400 B Firmware
Published: 2018-04-05
Last modified: 2026-06-17

Description

An exploitable insufficient resource pool vulnerability exists in the session communication functionality of Allen Bradley Micrologix 1400 Series B Firmware 21.2 and before. A specially crafted stream of packets can cause a flood of the session resource pool resulting in legitimate connections to the PLC being disconnected. An attacker can send unauthenticated packets to trigger this vulnerability.

Frequently asked questions

What is CVE-2017-12093?: An exploitable insufficient resource pool vulnerability exists in the session communication functionality of Allen Bradley Micrologix 1400 Series B Firmware 21.2 and before. A specially crafted stream of packets can cause a flood of the session resource pool resulting in legitimate connections to the PLC being disconnected. An attacker can send unauthenticated packets to trigger this vulnerability.
How severe is CVE-2017-12093?: CVE-2017-12093 has a CVSS 3.x base score of 5.3, rated medium 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 low.
Is CVE-2017-12093 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12093?: CVE-2017-12093 affects Rockwellautomation Micrologix 1400 B Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-12093?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-12093 published?: CVE-2017-12093 was published on 2018-04-05 and last updated on 2026-06-17.

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0445

Affected products (1)

cpe:2.3:o:rockwellautomation:micrologix_1400_b_firmware:*:*:*:*:*:*:*:*

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