How severe is CVE-2017-16391?

CVE-2017-16391 has a CVSS 3.x base score of 8.8, rated high 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-2017-16391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16391?

CVE-2017-16391 primarily affects Adobe Acrobat. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-16391?

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-2017-16391 published?

CVE-2017-16391 was published on 2017-12-09 and last updated on 2026-06-17.

CVE-2017-16391

CVE-2017-16391 is a high-severity vulnerability in Adobe Acrobat with a CVSS 3.x base score of 8.8. 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-129.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.3
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-129
Affected product: Adobe Acrobat
Published: 2017-12-09
Last modified: 2026-06-17

Description

An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. The vulnerability is a result of untrusted input that is used to calculate an array index; the calculation occurs in the printing functionality. The vulnerability leads to an operation that can write to a memory location that is outside of the memory addresses allocated for the data structure. The specific scenario leads to a write access to a memory location that does not belong to the relevant process address space.

Frequently asked questions

What is CVE-2017-16391?: An issue was discovered in Adobe Acrobat and Reader: 2017.012.20098 and earlier versions, 2017.011.30066 and earlier versions, 2015.006.30355 and earlier versions, and 11.0.22 and earlier versions. The vulnerability is a result of untrusted input that is used to calculate an array index; the calculation occurs in the printing functionality. The vulnerability leads to an operation that can write to a memory location that is outside of the memory addresses allocated for the data structure. The specific scenario leads to a write access to a memory location that does not belong to the relevant process address space.
How severe is CVE-2017-16391?: CVE-2017-16391 has a CVSS 3.x base score of 8.8, rated high 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-2017-16391 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16391?: CVE-2017-16391 primarily affects Adobe Acrobat. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-16391?: 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-2017-16391 published?: CVE-2017-16391 was published on 2017-12-09 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:adobe:acrobat:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*

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