Vulnerability · Published Sep 11, 2026 · Assigned by mitre
CVE-2026-78126
Medium 5.9
In plain English
A medium-severity null pointer dereference in strongSwan from strongSwan. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.5%top 59.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
strongSwan 4.1.10 through 6.0.7 allows a NULL pointer dereference in the eap-aka plugin.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | strongswan | 5.9.8-5+deb12u6 | DEBIAN-CVE-2026-78126 |
| Debian:13 | strongswan | 6.0.1-6+deb13u7 | DEBIAN-CVE-2026-78126 |
| Debian:14 | strongswan | 6.1.0-1 | DEBIAN-CVE-2026-78126 |
| Ubuntu:22.04:LTS | strongswan | 5.9.5-2ubuntu2.8 | UBUNTU-CVE-2026-78126 |
| Ubuntu:22.04:LTS | strongswan | 5.9.5-2ubuntu2.8 | USN-8789-1 |
| Ubuntu:24.04:LTS | strongswan | 5.9.13-2ubuntu4.24.04.5 | USN-8789-1 |
| Ubuntu:24.04:LTS | strongswan | 5.9.13-2ubuntu4.24.04.5 | UBUNTU-CVE-2026-78126 |
| Ubuntu:26.04:LTS | strongswan | 6.0.4-1ubuntu3.2 | USN-8789-1 |
| Ubuntu:26.04:LTS | strongswan | 6.0.4-1ubuntu3.2 | UBUNTU-CVE-2026-78126 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| strongSwan | strongSwan | 4.1.10 – before 6.1.0 |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H