CVE-2026-78126 Null dereference in strongSwan
Medium 5.9
Published
Updated
Check this codebase for CVE-2026-78126 and fix it if it is affected.
What it is: CVE-2026-78126 is a medium-severity vulnerability in strongSwan, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-78126 in the wild and no public exploit code.
Affected product: strongSwan. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-78126/ (Markdown: https://insights.sbomify.com/CVE-2026-78126/index.md)
A NULL pointer dereference in the eap-aka plugin of strongSwan allows attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-78126?
CVE-2026-78126 is a medium-severity vulnerability in strongSwan, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
strongSwan 4.1.10 through 6.0.7 allows a NULL pointer dereference in the eap-aka plugin.
Weakness: CWE-476
Which versions are affected by CVE-2026-78126?
It affects 1 product.
Products include Strongswan Strongswan.
How do I fix CVE-2026-78126?
Upgrade to a fixed version.
Is CVE-2026-78126 being exploited?
There is no known exploitation of CVE-2026-78126 in the wild and no public exploit code.
Other vulnerabilities in strongSwan
Sources
Also known as AZL-100043, DEBIAN-CVE-2026-78126, GHSA-34f9-5v7x-jpw3, MINI-5f9r-w5qx-vc6v, UBUNTU-CVE-2026-78126.