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CVE-2025-26390: A vulnerability has been identified in OZW672 (All versions < V6.0), OZW772 (All versions < V6.0)

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CRITICAL 9.8REMOTEUPGRADEUPGRADE

CVE-2025-26390 is a critical-severity flaw (CVSS 9.8) affecting ozw672 firmware, ozw772 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been identified in OZW672 (All versions < V6.0), OZW772 (All versions < V6.0). The web service of affected devices is vulnerable to SQL injection when checking authentication data. This could allow an unauthenticated remote attacker to bypass the check and authenticate as Administrator user.

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.6% (top 49%)
CISA exploited listNo
WeaknessCWE-89
Published2025-05-13
Last modified2026-06-17
Publisher (CNA): Siemens AG · Vendor: siemens

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

Am I affected?

Timeline

siemens ozw672 firmware UPGRADE
Affected: < 6.0
Fixed in: 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
siemens ozw772 firmware UPGRADE
Affected: < 6.0
Fixed in: 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
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-2025-26390?

ozw672 firmware: upgrade to 6.0; ozw772 firmware: upgrade to 6.0. Exact commands for each OS are on this page.

Is CVE-2025-26390 being exploited?

CVE-2025-26390 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-2025-26390 affect?

CVE-2025-26390 affects ozw672 firmware, ozw772 firmware. Severity is critical (CVSS 9.8). A vulnerability has been identified in OZW672 (All versions < V6.0), OZW772 (All versions < V6.0). The web service of affected devices is vulnerable to SQL injection when checking authentication data. This could allow an unauthenticated rem

How urgent is CVE-2025-26390?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Siemens vulnerabilities

Related CVEs

References

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