CVE-2021-45079
9.1
CRITICAL · CVSS 3.1 · EPSS 2.8% (pctl 86)
In your normal cycle
Critical by CVSS (9.1), but no sign of active exploitation.
Description
In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.
Scoring
| CVSS | 9.1 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| EPSS | 2.77% — more likely to be exploited than 86% of all CVEs |
| Weakness | CWE-476 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2022-01-31 |
| Last modified | 2026-06-17 |
Affected (5)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| debian | debian linux |
| fedoraproject | extra packages for enterprise linux |
| fedoraproject | fedora |
| strongswan | strongswan |
References
→ the Explorer · watch your stack · NVD