Quick answers
- Is CVE-2026-31984 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-31984 being exploited in the wild.
- How severe is CVE-2026-31984?
- High severity, with a CVSS score of 7.5, published 9 July 2026.
- Which products and versions are affected?
- Nozomi Networks Guardian < 26.2.0.
- Is there a fix for CVE-2026-31984?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-31984 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-31984?
- Check whether you run Nozomi Networks Guardian 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.
Technical details
A denial-of-service vulnerability (CWE-770) exists in the audit logging functionality of Nozomi Networks Guardian and CMC. The root cause is a failure to enforce size limits on input data before it is recorded into audit log entries. A remote, unauthenticated attacker can exploit this by submitting network requests containing excessively large payloads. These payloads are written to disk as part of the audit trail, eventually exhausting available disk space. This resource exhaustion renders the system inoperable. The vulnerability is resolved in version 26.2.0.
Affected products
- Nozomi Networks Guardian < 26.2.0
- Nozomi Networks CMC < 26.2.0
Timeline
- 2026-07-07: advisory: Initial internal advisory revision
- 2026-07-09: disclosed: NVD publication date