IOServer OPC Drivers up to 1.0.20 memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in IOServer OPC Drivers up to 1.0.20. It has been rated as problematic. The impacted element is an unknown function. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2014-0777. No exploit exists.

Detailsinfo

A vulnerability was found in IOServer OPC Drivers up to 1.0.20 (Hardware Driver Software). It has been declared as critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

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.

The weakness was disclosed 04/11/2014 (Website). It is possible to read the advisory at ics-cert.us-cert.gov. This vulnerability is known as CVE-2014-0777 since 01/02/2014. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (92536), EUVD (EUVD-2014-0808), SecurityFocus (BID 66761†) and Vulnerability Center (SBV-45042†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Hardware Driver Software

Vendor

• IOServer

Name

• OPC Drivers

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18
• 1.0.19
• 1.0.20

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/02/2014 🔍
04/10/2014 +98 days 🔍
04/10/2014 +0 days 🔍
04/11/2014 +1 days 🔍
04/11/2014 +0 days 🔍
06/18/2014 +68 days 🔍
03/25/2015 +280 days 🔍
09/25/2025 +3837 days 🔍

Sourcesinfo

Advisory: ics-cert.us-cert.gov
Status: Not defined

CVE: CVE-2014-0777 (🔍)
GCVE (CVE): GCVE-0-2014-0777
GCVE (VulDB): GCVE-100-69307
EUVD: 🔍
X-Force: 92536
SecurityFocus: 66761 - IOServer CVE-2014-0777 Out-of-Bounds Read Vulnerability
Vulnerability Center: 45042 - IOServer OPC Server Remote DoS in OPC Drivers, High

Entryinfo

Created: 03/25/2015 16:45
Updated: 09/25/2025 06:03
Changes: 03/25/2015 16:45 (53), 05/31/2017 08:50 (3), 09/25/2025 01:54 (24), 09/25/2025 06:03 (1)
Complete: 🔍
Cache ID: 216:FAC:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

Might our Artificial Intelligence support you?

Check our Alexa App!