What is CVE-2015-6492?

CVE-2015-6492 is a high-severity vulnerability in Rockwellautomation Micrologix 1100 Firmware, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2015-10-28.

How severe is CVE-2015-6492?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Rockwellautomation Micrologix 1100 Firmware

CVE-2015-6492

Allen-Bradley MicroLogix 1100 devices before B FRN 15.000 and 1400 devices before B FRN 15.003 allow remote attackers to cause a denial of service (memory corruption and device crash) via a crafted HTTP request.

Vulnerability class: Buffer Overflow

Published 2015-10-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.045 (91.4th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

ics-cert.us-cert.gov/advisories/ICSA-15-300-03 (US Government Resource, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2015-6492?: CVE-2015-6492 is a high-severity vulnerability in Rockwellautomation Micrologix 1100 Firmware, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2015-10-28.
How severe is CVE-2015-6492?: High severity. CVSS v3 base score is 7.5 out of 10.