CVE intelligence and bounded remediation

CVE-2024-27323 — PDF-XChange Editor Updater Improper Certificate Validation Remote Code Execution Vulnerability

High CVSS 7.5

PDF-XChange Editor Updater Improper Certificate Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is not required to exploit this vulnerability. The specific flaw exists within the update functionality. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-22224.

Severity
High
CVSS
7.5 (3.1)
Published
2024-04-01
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-295

Affected products

  • pdf-xchange / pdf-tools / 10.1.1.381
  • pdf-xchange / pdf-xchange_editor / 10.1.1.381

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.