How severe is CVE-2017-9312?

CVE-2017-9312 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-2017-9312 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9312?

CVE-2017-9312 affects Rockwellautomation Allen-bradley L30erms Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9312?

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-2017-9312 published?

CVE-2017-9312 was published on 2018-06-25 and last updated on 2026-06-17.

CVE-2017-9312

CVE-2017-9312 is a high-severity vulnerability in Rockwellautomation Allen-bradley L30erms Firmware 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: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Rockwellautomation Allen-bradley L30erms Firmware
Published: 2018-06-25
Last modified: 2026-06-17

Description

Improperly implemented option-field processing in the TCP/IP stack on Allen-Bradley L30ERMS safety devices v30 and earlier causes a denial of service. When a crafted TCP packet is received, the device reboots immediately.

Frequently asked questions

What is CVE-2017-9312?: Improperly implemented option-field processing in the TCP/IP stack on Allen-Bradley L30ERMS safety devices v30 and earlier causes a denial of service. When a crafted TCP packet is received, the device reboots immediately.
How severe is CVE-2017-9312?: CVE-2017-9312 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-2017-9312 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9312?: CVE-2017-9312 affects Rockwellautomation Allen-bradley L30erms Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9312?: 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-2017-9312 published?: CVE-2017-9312 was published on 2018-06-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:rockwellautomation:allen-bradley_l30erms_firmware:*:*:*:*:*:*:*:*

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