How severe is CVE-2016-1789?

CVE-2016-1789 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-1789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1789?

CVE-2016-1789 affects Apple Ibooks Author. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-1789?

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

When was CVE-2016-1789 published?

CVE-2016-1789 was published on 2016-04-05 and last updated on 2026-06-17.

CVE-2016-1789

CVE-2016-1789 is a medium-severity vulnerability in Apple Ibooks Author with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Ibooks Author
Published: 2016-04-05
Last modified: 2026-06-17

Description

Apple iBooks Author before 2.4.1 allows remote attackers to read arbitrary files via an iBooks Author file containing an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

Frequently asked questions

What is CVE-2016-1789?: Apple iBooks Author before 2.4.1 allows remote attackers to read arbitrary files via an iBooks Author file containing an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.
How severe is CVE-2016-1789?: CVE-2016-1789 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-1789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1789?: CVE-2016-1789 affects Apple Ibooks Author. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-1789?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-1789 published?: CVE-2016-1789 was published on 2016-04-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apple:ibooks_author:*:*:*:*:*:*:*:*