Quick answers
- Is CVE-2026-123025 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-123025 being exploited in the wild.
- How severe is CVE-2026-123025?
- Informational severity, published 5 November 2026.
- Which products and versions are affected?
- OPNsense Os-Acme-Client through 4.17.
- Is there a fix for CVE-2026-123025?
- Yes: fixed in os-acme-client 4.18. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-123025 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-123025?
- Check whether you run OPNsense Os-Acme-Client at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: os-acme-client 4.18
Technical details
An OS command injection vulnerability exists in the DnsGcloud::prepare() method, where user-controlled gcloud_account and gcloud_project fields are interpolated directly into a shell command passed to proc_open() without validation or escaping. A remote authenticated user with certificate management privileges can exploit this by crafting malicious configuration values to achieve arbitrary code execution as root.
Affected products
- OPNsense os-acme-client through 4.17
Timeline
- 2026-11-05: disclosed
- 2026-11-03: patched: Fix merged in PR #5873