CVE-2011-3489

Rockwell RSLogix < 19 - Denial of Service via Crafted RNA Packet

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-3489. PoCs published by Luigi Auriemma.

AI-analyzed exploit summary This exploit targets a denial of service vulnerability in Rockwell RSLogix's RsvcHost.exe and RNADiagReceiver.exe services. The flaw is due to improper handling of a 32-bit size field in 'rna' packets, leading to a memset zero overflow and invalid read access.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Luigi Auriemma · textdoswindows
https://www.exploit-db.com/exploits/17843

This exploit targets a denial of service vulnerability in Rockwell RSLogix's RsvcHost.exe and RNADiagReceiver.exe services. The flaw is due to improper handling of a 32-bit size field in 'rna' packets, leading to a memset zero overflow and invalid read access.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Rockwell RSLogix <= 19 (RsvcHost.exe 2.30.0.23)
No auth needed
Prerequisites: Network access to target ports (4446)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/69808
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/8383
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/49608

Scores

EPSS 0.0898
EPSS Percentile 94.6%

Details

CWE
CWE-119
Status published
Products (1)
rockwellautomation/rslogix < 19
Published Sep 16, 2011
Tracked Since Feb 18, 2026