CVE-2014-0777

HIGH 7.8CVE-2014-0777 · Published 11/04/2014 · updated 17/06/2026

In short

CVE-2014-0777 is a HIGH (CVSS 7.8) vulnerability affecting opc drivers (ioserver).
Chance of exploitation in the next 30 days (EPSS): 2.4%, higher than 84.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
opc drivers ioserver	`≤ 1.0.20`	No fix yet

Description

The Modbus slave/outstation driver in the OPC Drivers 1.0.20 and earlier in IOServer OPC Server allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted packet.

References

ioserver.com
cisa.gov/news-events/ics-advisories/icsa-14-100-01
ics-cert.us-cert.gov/advisories/ICSA-14-100-01 · US Government Resource

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