CVE-2009-0790
The pluto IKE daemon in Openswan and Strongswan IPsec 2.6 before 2.6.21 and 2.4 before 2.4.14, and Strongswan 4.2 before 4.2.14 and 2.8 before 2.8.9, allows remote attackers to cause a denial of service (daemon crash and restart) via a crafted (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) IPsec IKE Notification message that triggers a NULL pointer dereference related to inconsistent ISAKMP state and the lack of a phase2 state association in DPD.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 3.2% (88th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0788)
- Published
- April 1, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0788 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- strongswan / strongswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
- xelerance / openswan
and 10 more…
References
- http://download.strongswan.org/CHANGES4.txt(Vendor Advisory)
- http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00010.html
- http://secunia.com/advisories/34472(Vendor Advisory)
- http://secunia.com/advisories/34483(Vendor Advisory)
- http://secunia.com/advisories/34494(Vendor Advisory)
- http://secunia.com/advisories/34546(Vendor Advisory)
- http://www.debian.org/security/2009/dsa-1759(Patch)
- http://www.debian.org/security/2009/dsa-1760(Patch)
- http://www.openswan.org/CVE-2009-0790/CVE-2009-0790.txt(Vendor Advisory)
- http://www.redhat.com/support/errata/RHSA-2009-0402.html
- http://www.securityfocus.com/archive/1/502270/100/0/threaded
- http://www.securityfocus.com/bid/34296(Patch)
- http://www.securitytracker.com/id?1021949
- http://www.securitytracker.com/id?1021950
- http://www.vupen.com/english/advisories/2009/0886
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49523
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11171
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain