How severe is CVE-2017-3969?

CVE-2017-3969 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2017-3969 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-3969?

CVE-2017-3969 affects Mcafee Network Security Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-3969?

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-2017-3969 published?

CVE-2017-3969 was published on 2018-04-04 and last updated on 2026-06-17.

CVE-2017-3969

CVE-2017-3969 is a high-severity vulnerability in Mcafee Network Security Manager with a CVSS 3.x base score of 8.2. 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-417.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-417
Affected product: Mcafee Network Security Manager
Published: 2018-04-04
Last modified: 2026-06-17

Description

Abuse of communication channels vulnerability in the server in McAfee Network Security Management (NSM) before 8.2.7.42.2 allows man-in-the-middle attackers to decrypt messages via an inadequate implementation of SSL.

Frequently asked questions

What is CVE-2017-3969?: Abuse of communication channels vulnerability in the server in McAfee Network Security Management (NSM) before 8.2.7.42.2 allows man-in-the-middle attackers to decrypt messages via an inadequate implementation of SSL.
How severe is CVE-2017-3969?: CVE-2017-3969 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2017-3969 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-3969?: CVE-2017-3969 affects Mcafee Network Security Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-3969?: 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-2017-3969 published?: CVE-2017-3969 was published on 2018-04-04 and last updated on 2026-06-17.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10192

Affected products (1)

cpe:2.3:a:mcafee:network_security_manager:*:*:*:*:*:*:*:*

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