strongSwan 5.2.2 and 5.3.0 allows remote attackers to cause a denial of service (daemon…
Priority MEDIUM 49CWE-19Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
strongSwan 5.2.2 and 5.3.0 allows remote attackers to cause a denial of service (daemon crash) or execute arbitrary code.
Why it matters now
EPSS 0.04559 91st 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 · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:strongswan:strongswan:5.2.2:*:*:*:*:*:*:* | 5.2.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.3.0:*:*:*:*:*:*:* | 5.3.0 | Vulnerable | strongSwan |
- cpe:2.3:a:strongswan:strongswan:5.2.2:*:*:*:*:*:*:* Versions 5.2.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.3.0:*:*:*:*:*:*:* Versions 5.3.0 Vulnerable ·strongSwan
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2015-3991
- 2026-10-03 Alias added: GHSA-23jq-mpmp-prmf
References
More Strongswan vulnerabilities
- TI-2023-22300 strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code… CVSS 3.1CRITICAL 9.8
- TI-2004-00531 FreeS/WAN 1.x and 2.x, and other related products including superfreeswan 1.x, openswan… CVSS 2.0HIGH 10.0
- TI-2023-11610 strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a… CVSS 3.1CRITICAL 9.8
- TI-2021-20414 In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too… CVSS 3.1CRITICAL 9.1
- TI-2017-08240 The gmp plugin in strongSwan before 5.6.0 allows remote attackers to cause a denial of… CVSS 3.1HIGH 7.5
- TI-2021-18520 The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted… CVSS 3.1HIGH 7.5
Sources
- CVE-2015-3991 · CVE Program
- CVE-2015-3991 · NVD
- FIRST EPSS
- GHSA-23jq-mpmp-prmf · GitHub Advisory Database · CC BY 4.0
- CVE-2015-3991 · 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