Multiple stack-based buffer overflows in the HMI application in DATAC RealFlex RealWin 2.1 (Build 6.1.10.10) and earlier allow remote attac…

published 2011-04-05 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1564

cvss: 10.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 74.6%; EPSS 74.6% chance of exploitation in 30 days, percentile 99.5%
public exploits: 3; Metasploit, Exploit-DB

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.

Timeline

2011-03-21 First public exploit (Metasploit exploit/windows/scada/realwin_on_fc_binfile_a)
2011-04-05 Published

Exploit prediction

74.64% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit exploit/windows/scada/realwin_on_fc_binfile_a DATAC RealWin SCADA Server 2 On_FC_CONNECT_FCS_a_FILE Buffer Overflow metasploit exploit, great rank, 2011-03-21
Metasploit exploit/windows/scada/realwin_on_fcs_login RealWin SCADA Server DATAC Login Buffer Overflow metasploit exploit, great rank, 2011-03-21
EDB-17025 DATAC RealWin - Multiple Vulnerabilities dos, 2011-03-22
aluigi.org http://aluigi.org/adv/realwin_2-adv.txt referenced PoC, tagged "exploit" by a source, unverified
aluigi.org http://aluigi.org/adv/realwin_7-adv.txt referenced PoC, tagged "exploit" by a source, unverified
aluigi.org http://aluigi.org/adv/realwin_4-adv.txt referenced PoC, tagged "exploit" by a source, unverified
aluigi.org http://aluigi.org/adv/realwin_8-adv.txt referenced PoC, tagged "exploit" by a source, unverified
aluigi.org http://aluigi.org/adv/realwin_5-adv.txt referenced PoC, tagged "exploit" by a source, unverified
aluigi.org http://aluigi.org/adv/realwin_3-adv.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

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

References

exploit-db.com /exploits/17025
exploit
aluigi.org /adv/realwin_2-adv.txt
exploit
aluigi.org /adv/realwin_7-adv.txt
exploit
aluigi.org /adv/realwin_4-adv.txt
exploit
aluigi.org /adv/realwin_8-adv.txt
exploit
aluigi.org /adv/realwin_5-adv.txt
exploit
aluigi.org /adv/realwin_3-adv.txt
exploit
secunia.com /advisories/43848
third-party-advisory, vendor-advisory
vupen.com /english/advisories/2011/0742
vdb-entry, vendor-advisory
securityfocus.com /bid/46937
vdb-entry
us-cert.gov /control_systems/pdf/ICS-ALERT-11-080-04.pdf
us-government-resource
securityreason.com /securityalert/8176
third-party-advisory

Sources

CVE List CVE-2011-1563
NVD CVE-2011-1563

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary