HighFix available
strongswan — security advisory
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.
- Products
- strongswan
- Affected versions
- Not specified
- Fixed versions
- 5.8.4-r3, 5.9.1-r1, 5.9.1-r2, 5.9.1-r3
- CVEs
- CVE-2021-41990
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:06 UTC · Revision 1
Source evidence
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.
osv:ALPINE-CVE-2021-41990
strongswan
Fixed versions: 5.8.4-r3
strongswan
Fixed versions: 5.9.1-r1
strongswan
Fixed versions: 5.9.1-r2
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
strongswan
Fixed versions: 5.9.1-r3
Complete source record
{
"id": "939c5e026df96203e17261fcc57a7514db09acc41e1f82bdb805f808d0529d07",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2021-41990",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2021-41990",
"summary": "The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.",
"evidence": "osv:ALPINE-CVE-2021-41990",
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"fixed_versions": [
{
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],
"affected_versions": []
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],
"severity": "high",
"structured": {
"id": "ALPINE-CVE-2021-41990",
"aliases": [
"ALPINE-CVE-2021-41990"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
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"affected": [
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"package": {
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"ecosystem": "Alpine:v3.13"
},
"database_specific": {
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},
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{
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"ecosystem": "Alpine:v3.14"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-41990.json"
},
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{
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],
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}
],
"modified": "2026-10-23T17:17:56.217179197Z",
"provider": "osv",
"upstream": [
"CVE-2021-41990"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2021-41990"
]
},
"related_cves": [
{
"value": "CVE-2021-41990",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415571,
"published_at": "2021-10-18T14:15:10.297+00:00"
}