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Vulnerabilities

Vulnerability · CVE-2017-16391

Adobe Acrobat and Reader Improper Validation of Array Index

Published May 6, 2024 · catalog updated May 6, 2024 · Adobe Acrobat and Reader

Patch now

CVE-2017-16391 is in the CISA known-exploited catalog. Confirm Adobe Acrobat and Reader against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
6.72%
Remediation
Remediation guidance
Affected products
stated Acrobat and Reader · vendor Adobe Acrobat and Reader

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 pro

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated Acrobat and Reader<= 11.0.22
  • vendor Adobe Acrobat and Readerversion unspecified

How to fix CVE-2017-16391

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2017-16391 is in the CISA known-exploited catalog. Confirm Adobe Acrobat and Reader against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with Acrobat and Reader <= 11.0.22. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 6.72%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 6, 2024 · VulnCheck KEV

    Detected

    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

  2. May 6, 2024 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2017-16391

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2017-16391

    30-day exploitation probability 6.7%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-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 arra

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.