CVE-2014-0777

high

Published 2014-04-11 · Modified 2026-05-06

CVSS v3

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CVSS v2

8.3

VIR risk

8.3

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Application impact

Vendor	Product	Versions	Fixed
ioserver	ioserver_opc_server	`-`
ioserver	opc_drivers	`{"endIncluding":"1.0.20"}`

References

http://www.ioserver.com/
https://www.cisa.gov/news-events/ics-advisories/icsa-14-100-01
http://ics-cert.us-cert.gov/advisories/ICSA-14-100-01

CWEs

CWE-125 CWE-119

Verify integrity in audit chain (admin only). AS-IS.