How severe is CVE-2017-7924?

CVE-2017-7924 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-2017-7924 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7924?

CVE-2017-7924 primarily affects Rockwellautomation 1763-l16bwa Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-7924?

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-2017-7924 published?

CVE-2017-7924 was published on 2017-09-20 and last updated on 2026-06-17.

CVE-2017-7924

CVE-2017-7924 is a high-severity vulnerability in Rockwellautomation 1763-l16bwa Firmware with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 22% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Rockwellautomation 1763-l16bwa Firmware
Published: 2017-09-20
Last modified: 2026-06-17

Description

An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD. A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition.

Frequently asked questions

What is CVE-2017-7924?: An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD. A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition.
How severe is CVE-2017-7924?: CVE-2017-7924 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-2017-7924 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7924?: CVE-2017-7924 primarily affects Rockwellautomation 1763-l16bwa Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-7924?: 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-2017-7924 published?: CVE-2017-7924 was published on 2017-09-20 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:rockwellautomation:1763-l16bwa_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:1763-l16awa_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:1763-l16bbb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:rockwellautomation:1763-l16dwd_firmware:-:*:*:*:*:*:*:*

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