Is CVE-2017-2391 in the CISA KEV catalog?

No. CVE-2017-2391 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-2391?

CVE-2017-2391 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2017-2391?

CVE-2017-2391 has an EPSS score of 0.96% (57th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2017-2391?

No published fix for CVE-2017-2391 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2017-2391

MEDIUM

5.3

CVSS v3

NVD

Description

An issue was discovered in certain Apple products. Pages before 6.1, Numbers before 4.1, and Keynote before 7.1 on macOS and Pages before 3.1, Numbers before 3.1, and Keynote before 3.1 on iOS are affected. The issue involves the "Export" component. It allows users to bypass iWork PDF password protection by leveraging use of 40-bit RC4.

CWE-326

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.96%probability of exploitation in 30 days

57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Vendor Advisory1

support.apple.com

Third-Party Advisory1

securityfocus.com

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.