CVE-2018-18689

MEDIUM
5.3
CVSS Score
Published: January 7, 2021 at 05:59 PM UTC
Updated: June 17, 2026 at 01:47 AM UTC
17 products affected across 11 vendorsFoxit ReaderXchange PDF Xchange EditorNitro Pro· also runs on 3 platforms

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Severity
MEDIUM5.3
Exploit prediction
EPSS 4%

Description

The Portable Document Format (PDF) specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, a Signature Wrapping vulnerability exists in multiple products. An attacker can use /ByteRange and xref manipulations that are not detected by the signature-validation logic. This affects Foxit Reader before 9.4 and PhantomPDF before 8.3.9 and 9.x before 9.4. It also affects eXpert PDF 12 Ultimate, Expert PDF Reader, Nitro Pro, Nitro Reader, PDF Architect 6, PDF Editor 6 Pro, PDF Experte 9 Ultimate, PDFelement6 Pro, PDF Studio Viewer 2018, PDF Studio Pro, PDF-XChange Editor and Viewer, Perfect PDF 10 Premium, Perfect PDF Reader, Soda PDF, and Soda PDF Desktop.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

microsoft-windows (environment)
microsoft-windows (environment)
apple-macos (environment) · linux-linux-kernel (environment) · microsoft-windows (environment)
microsoft-windows (environment)
microsoft-windows (environment)
apple-macos (environment) · microsoft-windows (environment)
apple-macos (environment) · microsoft-windows (environment)
microsoft-windows (environment)
apple-macos (environment) · linux-linux-kernel (environment) · microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-347

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