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CVE-2015-4171
strongSwan 4.3.0 through 5.x before 5.3.2 and strongSwan VPN Client before 1.4.6, when using EAP or pre-shared keys for authenticating an…
Low2.6EPSS 2.0%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
strongSwan 4.3.0 through 5.x before 5.3.2 and strongSwan VPN Client before 1.4.6, when using EAP or pre-shared keys for authenticating an IKEv2 connection, does not enforce server authentication restrictions until the entire authentication process is complete, which allows remote servers to obtain credentials by using a valid certificate and then reading the responses.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.6 | AV:N/AC:H/Au:N/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 2.0% · top 19% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Weakness
Affected products
n/a
- affected n/a
References (12)
- 1032514 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://www.strongswan.org/blog/2015/06/08/strongswan-vulnerability-%2528cve-2015-4171%2529.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2015:1082 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20150608 Re: StrongSwan VPN client for Android leaks username to rouge server (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.suse.com/security/cve/CVE-2015-4171.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20150529 StrongSwan VPN client for Android leaks username to rouge server (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20150529 Re: StrongSwan VPN client for Android leaks username to rouge server (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://play.google.com/store/apps/details?id=org.strongswan.android (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2628-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- DSA-3282 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 74933 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://bugzilla.suse.com/show_bug.cgi?id=933591 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2015-4171)Record last updated .