CVE-2011-3489

Rslogix vulnerability

CVSS

5.0

EPSS

9.0%

EPSS pct

95th

Exploited

No known

RnaUtility.dll in RsvcHost.exe 2.30.0.23 in Rockwell RSLogix 19 and earlier allows remote attackers to cause a denial of service (crash) via a crafted rna packet with a long string to TCP port 4446 that triggers (1) "a memset zero overflow" or (2) an out-of-bounds read, related to improper handling of a 32-bit size field.

Affected vendor

Rockwellautomation

Affected product

Rslogix

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Weakness type (CWE)

CWE-119 — Improper Restriction of Operations within Memory Bounds

Published

2011-09-16

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 9.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2011-3489

Confirm whether Rockwellautomation Rslogix is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-3489.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-3489

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