Is CVE-2011-1563 being actively exploited?

CVE-2011-1563 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-1563?

CVE-2011-1563 has a CVSS 2.0 base score of 10.0 (HIGH).

CVE-2011-1563

HIGH · CVSS 10.0EPSS 74.6%EU EUVD

Multiple stack-based buffer overflows in the HMI application in DATAC RealFlex RealWin 2.1 (Build 6.1.10.10) and earlier allow remote attackers to execute arbitrary code via (1) a long username in an On_FC_CONNECT_FCS_LOGIN packet, and crafted (2) On_FC_CTAGLIST_FCS_CADDTAG, (3) On_FC_CTAGLIST_FCS_CDELTAG, (4) On_FC_CTAGLIST_FCS_ADDTAGMS, (5) On_FC_RFUSER_FCS_LOGIN, (6) unspecified "On_FC_BINFILE_FCS_*FILE", (7) On_FC_CGETTAG_FCS_GETTELEMETRY, (8) On_FC_CGETTAG_FCS_GETCHANNELTELEMETRY, (9) On_FC_CGETTAG_FCS_SETTELEMETRY, (10) On_FC_CGETTAG_FCS_SETCHANNELTELEMETRY, and (11) On_FC_SCRIPT_FCS_STARTPROG packets to port 910.

Key facts

CVSS score: 10.0 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-119
EPSS score: 74.6% (100th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-1564)
Published: April 5, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-1564 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

realflex / realwin
realflex / realwin
realflex / realwin

References

http://aluigi.org/adv/realwin_2-adv.txt(Exploit)
http://aluigi.org/adv/realwin_3-adv.txt(Exploit)
http://aluigi.org/adv/realwin_4-adv.txt(Exploit)
http://aluigi.org/adv/realwin_5-adv.txt(Exploit)
http://aluigi.org/adv/realwin_7-adv.txt(Exploit)
http://aluigi.org/adv/realwin_8-adv.txt(Exploit)
http://secunia.com/advisories/43848(Vendor Advisory)
http://securityreason.com/securityalert/8176
http://www.exploit-db.com/exploits/17025(Exploit)
http://www.securityfocus.com/bid/46937
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-080-04.pdf(US Government Resource)
http://www.vupen.com/english/advisories/2011/0742(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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