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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 22.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 22.18% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- rockwellautomation/1763-l16bwa firmware · rockwellautomation/1763-l16awa firmware · rockwellautomation/1763-l16bbb firmware · rockwellautomation/1763-l16dwd firmware
- Source
- ics-cert@hq.dhs.gov
EPSS 22.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/99622Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03Mitigation, Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/99622Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03Mitigation, Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.