CVE-2024-52878 Memory corruption in n/a
A buffer over-read in the InsydeH2O UEFI firmware VariableRuntimeDxe driver allows attackers to potentially read sensitive memory or cause system instability.
- 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-2024-52878?
CVE-2024-52878 is a high-severity memory corruption vulnerability in Insyde Insydeh2o, published on 15 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, VariableServicesSetVariable () can be called by gRT_>SetVariable () or the SmmSetSensitiveVariable () or SmmInternalSetVariable () from SMM. In VariableServicesSetVariable (), it uses StrSize () to get variable name size, uses StrLen () to get variable name length and uses StrCmp () to compare strings. These actions may cause a buffer over-read.
Weakness: CWE-126
Which versions are affected by CVE-2024-52878?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2024-52878?
No fix has been published for CVE-2024-52878 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2024-52878 being exploited?
There is no known exploitation of CVE-2024-52878 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-qc53-6pcv-3q2p.