Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | strongswan |
Timeline
- Mar 30, 2026 CVE Published
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3063 strongswan security update 30 March 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: strongswan Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2026-25075 Original Bulletin: https://lists.debian.org/debian-lts-announce/2026/03/msg00016.html Comment: CVSS (Max): 7.5 CVE-2026-25075 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: VulnCheck Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H EPSS (Max): 0.2% (35th) CVE-2026-25075 2026-03-29 - --------------------------BEGIN INCLUDED TEXT-------------------- - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4512-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Thorsten Alteholz March 27, 2026 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : strongswan Version : 5.9.1-1+deb11u6 CVE ID : CVE-2026-25075 Kazuma Matsumoto discovered an integer overflow bug in the EAP-TTLS plugin of strongSwan, an IKE/IPsec suite. The EAP-TTLS plugin doesn't check the length field in the header of attribute-value pairs (AVPs) tunneled in EAP-TTLS, which can cause an integer underflow that may lead to a crash. An unauthenticated attacker could exploit this for a DoS attack by sending a crafted message. For Debian 11 bullseye, this problem has been fixed in version 5.9.1-1+deb11u6. We recommend that you upgrade your strongswan packages. For the detailed security status of strongswan please refer to its security tracker page at: https://security-tracker.debian.org/tracker/strongswan Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================
| Vendor | Product | Versions |
|---|---|---|
| Debian | strongswan |