How severe is CVE-2014-0777?

CVE-2014-0777 has a CVSS 2.0 base score of 8.3, rated high severity.

Is CVE-2014-0777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-0777?

CVE-2014-0777 primarily affects Ioserver Ioserver Opc Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-0777?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2014-0777 published?

CVE-2014-0777 was published on 2014-04-11 and last updated on 2026-06-17.

CVE-2014-0777

CVE-2014-0777 is a high-severity vulnerability in Ioserver Ioserver Opc Server with a CVSS 2.0 base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 2.0 base score 8.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Ioserver Ioserver Opc Server
Published: 2014-04-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2014-0777?: 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.
How severe is CVE-2014-0777?: CVE-2014-0777 has a CVSS 2.0 base score of 8.3, rated high severity.
Is CVE-2014-0777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-0777?: CVE-2014-0777 primarily affects Ioserver Ioserver Opc Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-0777?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2014-0777 published?: CVE-2014-0777 was published on 2014-04-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ioserver:ioserver_opc_server:-:*:*:*:*:*:*:*
cpe:2.3:a:ioserver:opc_drivers:*:*:*:*:*:*:*:*

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