CVE-2011-3489
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…
Does this matter?
A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 8.7%. Treat it as high on anything reachable from the internet.
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 8.75% probability · 95th percentile
- Public exploits
- 1 in Exploit-DB · first 14 September 2011
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- rockwellautomation/rslogix
- Source
- cve@mitre.org
EPSS 8.7% since 26 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.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://aluigi.altervista.org/adv/rslogix_1-adv.txtExploit
- http://securityreason.com/securityalert/8383
- http://www.securityfocus.com/bid/49608
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69808
- http://aluigi.altervista.org/adv/rslogix_1-adv.txtExploit
- http://securityreason.com/securityalert/8383
- http://www.securityfocus.com/bid/49608
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69808
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.