The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in…
Priority LOW 28CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.
Why it matters now
EPSS 0.02582 85th 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 · 44
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* | 15.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* | 15.10 | Vulnerable | Canonical |
| cpe:2.3:a:strongswan:strongswan:4.2.12:*:*:*:*:*:*:* | 4.2.12 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.2.13:*:*:*:*:*:*:* | 4.2.13 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.2.14:*:*:*:*:*:*:* | 4.2.14 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.2.15:*:*:*:*:*:*:* | 4.2.15 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.2.16:*:*:*:*:*:*:* | 4.2.16 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:* | 4.3.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:* | 4.3.1 | Vulnerable | strongSwan |
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* Versions 15.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
- cpe:2.3:a:strongswan:strongswan:4.2.12:*:*:*:*:*:*:* Versions 4.2.12 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.2.13:*:*:*:*:*:*:* Versions 4.2.13 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.2.14:*:*:*:*:*:*:* Versions 4.2.14 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.2.15:*:*:*:*:*:*:* Versions 4.2.15 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.2.16:*:*:*:*:*:*:* Versions 4.2.16 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:* Versions 4.3.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:* Versions 4.3.1 Vulnerable ·strongSwan
Show 34 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:* | 4.3.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.3.3:*:*:*:*:*:*:* | 4.3.3 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.3.4:*:*:*:*:*:*:* | 4.3.4 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.3.5:*:*:*:*:*:*:* | 4.3.5 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.3.6:*:*:*:*:*:*:* | 4.3.6 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.3.7:*:*:*:*:*:*:* | 4.3.7 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.4.0:*:*:*:*:*:*:* | 4.4.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.4.1:*:*:*:*:*:*:* | 4.4.1 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.5.0:*:*:*:*:*:*:* | 4.5.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.5.1:*:*:*:*:*:*:* | 4.5.1 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.5.2:*:*:*:*:*:*:* | 4.5.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.5.3:*:*:*:*:*:*:* | 4.5.3 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.6.0:*:*:*:*:*:*:* | 4.6.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.6.1:*:*:*:*:*:*:* | 4.6.1 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.6.2:*:*:*:*:*:*:* | 4.6.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.6.3:*:*:*:*:*:*:* | 4.6.3 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:4.6.4:*:*:*:*:*:*:* | 4.6.4 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:* | 5.0.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:* | 5.0.1 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:* | 5.0.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:* | 5.0.3 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:* | 5.0.4 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.1.0:*:*:*:*:*:*:* | 5.1.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.1.1:*:*:*:*:*:*:* | 5.1.1 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.1.2:*:*:*:*:*:*:* | 5.1.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.1.3:*:*:*:*:*:*:* | 5.1.3 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.2.0:*:*:*:*:*:*:* | 5.2.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.2.1:*:*:*:*:*:*:* | 5.2.1 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.2.2:*:*:*:*:*:*:* | 5.2.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.2.3:*:*:*:*:*:*:* | 5.2.3 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.3.0:*:*:*:*:*:*:* | 5.3.0 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.3.1:*:*:*:*:*:*:* | 5.3.1 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.3.2:*:*:*:*:*:*:* | 5.3.2 | Vulnerable | strongSwan |
| cpe:2.3:a:strongswan:strongswan:5.3.3:*:*:*:*:*:*:* | 5.3.3 | Vulnerable | strongSwan |
- cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:* Versions 4.3.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.3.3:*:*:*:*:*:*:* Versions 4.3.3 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.3.4:*:*:*:*:*:*:* Versions 4.3.4 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.3.5:*:*:*:*:*:*:* Versions 4.3.5 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.3.6:*:*:*:*:*:*:* Versions 4.3.6 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.3.7:*:*:*:*:*:*:* Versions 4.3.7 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.4.0:*:*:*:*:*:*:* Versions 4.4.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.4.1:*:*:*:*:*:*:* Versions 4.4.1 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.5.0:*:*:*:*:*:*:* Versions 4.5.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.5.1:*:*:*:*:*:*:* Versions 4.5.1 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.5.2:*:*:*:*:*:*:* Versions 4.5.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.5.3:*:*:*:*:*:*:* Versions 4.5.3 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.6.0:*:*:*:*:*:*:* Versions 4.6.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.6.1:*:*:*:*:*:*:* Versions 4.6.1 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.6.2:*:*:*:*:*:*:* Versions 4.6.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.6.3:*:*:*:*:*:*:* Versions 4.6.3 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:4.6.4:*:*:*:*:*:*:* Versions 4.6.4 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:* Versions 5.0.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:* Versions 5.0.1 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:* Versions 5.0.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:* Versions 5.0.3 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:* Versions 5.0.4 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.1.0:*:*:*:*:*:*:* Versions 5.1.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.1.1:*:*:*:*:*:*:* Versions 5.1.1 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.1.2:*:*:*:*:*:*:* Versions 5.1.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.1.3:*:*:*:*:*:*:* Versions 5.1.3 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.2.0:*:*:*:*:*:*:* Versions 5.2.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.2.1:*:*:*:*:*:*:* Versions 5.2.1 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.2.2:*:*:*:*:*:*:* Versions 5.2.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.2.3:*:*:*:*:*:*:* Versions 5.2.3 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.3.0:*:*:*:*:*:*:* Versions 5.3.0 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.3.1:*:*:*:*:*:*:* Versions 5.3.1 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.3.2:*:*:*:*:*:*:* Versions 5.3.2 Vulnerable ·strongSwan
- cpe:2.3:a:strongswan:strongswan:5.3.3:*:*:*:*:*:*:* Versions 5.3.3 Vulnerable ·strongSwan
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2015-8023
- 2026-10-03 Alias added: GHSA-4qm7-rm85-wr68
References
Sources
- CVE-2015-8023 · CVE Program
- CVE-2015-8023 · NVD
- FIRST EPSS
- GHSA-4qm7-rm85-wr68 · GitHub Advisory Database · CC BY 4.0
- CVE-2015-8023 · 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