CVE-2017-7924 in the critical feed json
An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB,…
published 2017-09-20 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16895
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 22.2%
- EPSS 22.2% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Metasploit
Summary
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.
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-17-138-03 updated cvss 7.5
Rockwell Automation MicroLogix 1100 Controllers
-
Rockwell Automation MicroLogix 1100 controllers 1763-L16DWD, 1763-L16BWA, 1763-L16AWA, 1763-L16BBBaffected: vendor fix, mitigation “For more information on this vulnerability and more detailed mitigation instructions, please see Rockwell Automation's advisory.” rockwellautomation.custhelp.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
22.18% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit auxiliary/dos/scada/allen_bradley_pccc DoS Exploitation of Allen-Bradley's Legacy Protocol (PCCC) metasploit auxiliary, normal rank
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a Rockwell Automation MicroLogix 1100 Controllers
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
securityfocus.com
/bid/99622
vdb-entry, third-party-advisory
-
ics-cert.us-cert.gov
/advisories/ICSA-17-138-03
mitigation, third-party-advisory, us-government-resource
Sources
- CVE List CVE-2017-7924
- NVD CVE-2017-7924
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