Linux · Security advisory · November 3, 2025
DLA-4359-1: strongswan security update
DLA-4359-1, released November 3, 2025, fixes 1 CVE in strongswan (version 5.9.1-1+deb11u5). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.
HighUnsupported product
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0098
62nd percentile
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| strongswan | Debian 11.6 (bullseye) | 5.9.1-1+deb11u5 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| High | CVE-2025-62291 | In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow. | 8.1 | 0.0098 | None reported |
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