How severe is CVE-2015-7939?

CVE-2015-7939 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-7939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7939?

CVE-2015-7939 affects Unitronics Visilogic Oplc Ide. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-7939?

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

When was CVE-2015-7939 published?

CVE-2015-7939 was published on 2016-01-09 and last updated on 2026-06-17.

CVE-2015-7939

CVE-2015-7939 is a critical-severity vulnerability in Unitronics Visilogic Oplc Ide with a CVSS 3.x base score of 9.6. 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v2: 9.3
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Unitronics Visilogic Oplc Ide
Published: 2016-01-09
Last modified: 2026-06-17

Description

Heap-based buffer overflow in Unitronics VisiLogic OPLC IDE before 9.8.09 allows remote attackers to execute arbitrary code via a long vlp filename.

Frequently asked questions

What is CVE-2015-7939?: Heap-based buffer overflow in Unitronics VisiLogic OPLC IDE before 9.8.09 allows remote attackers to execute arbitrary code via a long vlp filename.
How severe is CVE-2015-7939?: CVE-2015-7939 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-7939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7939?: CVE-2015-7939 affects Unitronics Visilogic Oplc Ide. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-7939?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-7939 published?: CVE-2015-7939 was published on 2016-01-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:unitronics:visilogic_oplc_ide:*:*:*:*:*:*:*:*

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