How severe is CVE-2017-11939?

CVE-2017-11939 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-11939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11939?

CVE-2017-11939 affects Microsoft Office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11939?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-11939 published?

CVE-2017-11939 was published on 2017-12-12 and last updated on 2026-06-17.

CVE-2017-11939

CVE-2017-11939 is a medium-severity vulnerability in Microsoft Office with a CVSS 3.x base score of 6.5. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Office
Published: 2017-12-12
Last modified: 2026-06-17

Description

Microsoft Office 2016 Click-to-Run (C2R) allows an information disclosure vulnerability due to the way Microsoft Office enforces DRM copy/paste permissions, aka "Microsoft Office Information Disclosure Vulnerability".

Frequently asked questions

What is CVE-2017-11939?: Microsoft Office 2016 Click-to-Run (C2R) allows an information disclosure vulnerability due to the way Microsoft Office enforces DRM copy/paste permissions, aka "Microsoft Office Information Disclosure Vulnerability".
How severe is CVE-2017-11939?: CVE-2017-11939 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-11939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11939?: CVE-2017-11939 affects Microsoft Office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11939?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-11939 published?: CVE-2017-11939 was published on 2017-12-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:office:2016:c2r:*:*:*:*:*:*

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