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CVE-2026-5937: Insufficient parameter verification leads to the occurrence of format errors in files, which will trigger an u

19
Routine
MEDIUM 5.5UPGRADEUPGRADE

CVE-2026-5937 is a medium-severity flaw (CVSS 5.5) affecting pdf editor, pdf reader. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insufficient parameter verification leads to the occurrence of format errors in files, which will trigger an unhandled "std::invalid_argument" exception, ultimately causing the program to terminate.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score5.5 (Medium)
Attack vectorLocal
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.1% (top 99%)
CISA exploited listNo
WeaknessCWE-248
Published2026-04-27
Last modified2026-10-26
Publisher (CNA): Foxit · Vendor: foxit

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Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

foxit pdf editor UPGRADE
Affected: < 13.2.4 · >= 14.0.0 and < 14.0.4 · >= 2023.0.0 and < 2026.1.1
Fixed in: 13.2.4, 14.0.4, 2026.1.1
Safe to downgrade to: a release before 14.0.0
1. Check installed version
apt-cache policy pdf-editor || rpm -q pdf-editor || pdf-editor --version
2. UPGRADE to 13.2.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade pdf-editor
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade pdf-editor
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 14.0.0 (Debian / Ubuntu)
apt-cache madison pdf-editor sudo apt install pdf-editor=<VERSION_BEFORE_14.0.0> sudo apt-mark hold pdf-editor
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list pdf-editor sudo dnf downgrade pdf-editor-<VERSION_BEFORE_14.0.0> sudo dnf versionlock add pdf-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.
foxit pdf reader UPGRADE
Affected: < 2026.1.1
Fixed in: 2026.1.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy pdf-reader || rpm -q pdf-reader || pdf-reader --version
2. UPGRADE to 2026.1.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade pdf-reader
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade pdf-reader
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2026-5937?

pdf editor: upgrade to 13.2.4, 14.0.4, 2026.1.1; pdf reader: upgrade to 2026.1.1. Exact commands for each OS are on this page.

Is CVE-2026-5937 being exploited?

CVE-2026-5937 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-2026-5937 affect?

CVE-2026-5937 affects pdf editor, pdf reader. Severity is medium (CVSS 5.5). Insufficient parameter verification leads to the occurrence of format errors in files, which will trigger an unhandled "std::invalid_argument" exception, ultimately causing the program to terminate.

How urgent is CVE-2026-5937?

Priority 19/100. No elevated risk signals yet.

References

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