Strongswan: >> Strongswan >> 5.2.1 Security Vulnerabilities
strongSwan 4.6.2 through 6.0.7 has an infinite loop in PKCS#5 decryption.
CVSS Score
5.9
EPSS Score
0.004
Published
2026-09-11
strongSwan 4.2.0 through 6.0.7 has a missing release of memory after its effective lifetime in the x509 plugin's attribute certificate parser.
CVSS Score
3.7
EPSS Score
0.002
Published
2026-09-11
strongSwan 5.1.3 through 6.0.7 has an infinite loop in the x509 plugin's attribute certificate parser for ietfAttrSyntax.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-09-11
strongSwan 4.5.0 through 6.0.7 has Incorrect Access Control in the eap-ttls and eap-peap plugins because there can be a missing or mismatched inner EAP identity.
CVSS Score
7.1
EPSS Score
0.003
Published
2026-09-11
strongSwan 4.2.0 through 6.0.7 has a NULL pointer dereference in the x509 plugin's attribute certificate parser.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-09-11
strongSwan 5.0.2 through 6.0.7 allows PKCS#7 certificate enumeration in the openssl plugin that leads to a lack of release of memory after its effective lifetime.
CVSS Score
3.7
EPSS Score
0.002
Published
2026-09-11
strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.
CVSS Score
5.9
EPSS Score
0.004
Published
2026-09-11
strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.
CVSS Score
7.5
EPSS Score
0.017
Published
2022-10-31
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.
CVSS Score
9.1
EPSS Score
0.028
Published
2022-01-31
The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.
CVSS Score
7.5
EPSS Score
0.052
Published
2021-10-18
Page 1