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

Routine

HIGH 7.5DOWNGRADEDOWNGRADE

CVE-2024-27323 is a high-severity flaw (CVSS 7.5) affecting pdf-tools, pdf-xchange editor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 att

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-295
Published	2024-04-01
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: pdf-xchange

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-04-01 22:15 UTCPublished CVE record published
2026-06-17 07:19 UTCUpdated Record last modified

pdf-xchange pdf-tools DOWNGRADE

Affected: 10.1.1.381

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.1.1.381

1. Check installed version

apt-cache policy pdf-tools || rpm -q pdf-tools || pdf-tools --version

2. No fixed release: DOWNGRADE to a release before 10.1.1.381 (Debian / Ubuntu)

apt-cache madison pdf-tools sudo apt install pdf-tools=<VERSION_BEFORE_10.1.1.381> sudo apt-mark hold pdf-tools

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pdf-tools sudo dnf downgrade pdf-tools-<VERSION_BEFORE_10.1.1.381> sudo dnf versionlock add pdf-tools

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

pdf-xchange pdf-xchange editor DOWNGRADE

Affected: 10.1.1.381

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.1.1.381

1. Check installed version

apt-cache policy pdf-xchange-editor || rpm -q pdf-xchange-editor || pdf-xchange-editor --version

2. No fixed release: DOWNGRADE to a release before 10.1.1.381 (Debian / Ubuntu)

apt-cache madison pdf-xchange-editor sudo apt install pdf-xchange-editor=<VERSION_BEFORE_10.1.1.381> sudo apt-mark hold pdf-xchange-editor

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pdf-xchange-editor sudo dnf downgrade pdf-xchange-editor-<VERSION_BEFORE_10.1.1.381> sudo dnf versionlock add pdf-xchange-editor

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-27323?

pdf-tools: downgrade or apply the listed mitigation; pdf-xchange editor: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-27323 being exploited?

CVE-2024-27323 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-27323 affect?

CVE-2024-27323 affects pdf-tools, pdf-xchange editor. Severity is 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

How urgent is CVE-2024-27323?

Priority 33/100. High severity

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References

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