CVE-2026-22540 DENIAL OF SERVICE VIA ARP PACKETS
Attackers can cause denial of service on EFACEC EV chargers by flooding ARP requests, disrupting the control board and charger functionality.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22540?
CVE-2026-22540 is a critical denial of service vulnerability in EFACEC QC60/90/120, published on 7 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The massive sending of ARP requests causes a denial of service on one board of the charger that allows control of the EV interfaces. Since the board must be operating correctly for the charger to also function correctly.
Weakness: CWE-400
Which versions are affected by CVE-2026-22540?
How do I fix CVE-2026-22540?
No fix has been published for CVE-2026-22540 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-22540 being exploited?
There is no known exploitation of CVE-2026-22540 in the wild and no public exploit code.
Sources
Also known as GHSA-q22q-86rc-668c.