CVE-2026-85509 Memory corruption in FreeIPMI
A stack-based buffer overflow in FreeIPMI allows attackers to execute arbitrary code or cause denial of service via malicious BMC responses.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-85509?
CVE-2026-85509 is a critical memory corruption vulnerability in FreeIPMI, published on 4 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FreeIPMI before 1.6.19 has a stack-based buffer overflow in _read_fru_data in libfreeipmi/fru/ipmi-fru.c when a BMC returns more bytes than requested.
Weakness: CWE-121
Which versions are affected by CVE-2026-85509?
How do I fix CVE-2026-85509?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-85509 being exploited?
There is no known exploitation of CVE-2026-85509 in the wild and no public exploit code.
Sources
Also known as AZL-99110, BELL-CVE-2026-85509, DEBIAN-CVE-2026-85509, GHSA-3j6m-x72j-q52g, UBUNTU-CVE-2026-85509.