CVE-2026-44469: The affected product extracts installation files to a temporary directory with incorrect default permissions d

Q: How do I fix CVE-2026-44469?

development system: upgrade to 3.5.22.20. Exact commands for each OS are on this page.

Q: Is CVE-2026-44469 being exploited?

CVE-2026-44469 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-44469 affect?

CVE-2026-44469 affects development system. Severity is high (CVSS 7.8). The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time windo

Routine

HIGH 7.8UPGRADE

CVE-2026-44469 is a high-severity flaw (CVSS 7.8) affecting development system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time window to replace verified files with malicious ones before installation, resulting in local privilege escalation.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-276
Published	2026-05-26
Last modified	2026-07-24

Publisher (CNA): CERT VDE · Vendor: codesys

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-26 08:16 UTCPublished CVE record published
2026-07-24 11:10 UTCUpdated Record last modified

codesys development system UPGRADE

Affected: < 3.5.22.20

Fixed in: 3.5.22.20

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy development-system || rpm -q development-system || development-system --version

2. UPGRADE to 3.5.22.20 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade development-system

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade development-system

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-2026-44469?

development system: upgrade to 3.5.22.20. Exact commands for each OS are on this page.

Is CVE-2026-44469 being exploited?

CVE-2026-44469 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-2026-44469 affect?

CVE-2026-44469 affects development system. Severity is high (CVSS 7.8). The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time windo

How urgent is CVE-2026-44469?

Priority 28/100. High severity

Related CVEs

CVE-2026-44468 HIGH 7.8 UPGRADE The affected product creates a directory with insecure default permissions during administrative installation

References

← Back to latest CVEs