libreswan before 3.18 allows remote attackers to cause a denial of service (NULL pointer…
Priority LOW 38CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
libreswan before 3.18 allows remote attackers to cause a denial of service (NULL pointer dereference and pluto daemon restart).
Why it matters now
EPSS 0.03013 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:* | up to 3.17 | Vulnerable | The Libreswan Project |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* | 24 | Vulnerable | Fedoraproject |
- cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:* Versions up to 3.17 Vulnerable ·The Libreswan Project
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* Versions 24 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2016-5391
- 2026-10-03 Alias added: GHSA-hp5p-v8v6-q6h6
References
Sources
- CVE-2016-5391 · CVE Program
- CVE-2016-5391 · NVD
- FIRST EPSS
- GHSA-hp5p-v8v6-q6h6 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-5391 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences