CVE-2024-52877 Memory corruption in n/a
A buffer over-read in the InsydeH2O UEFI firmware allows attackers to read sensitive memory or 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
- None listed
What is CVE-2024-52877?
CVE-2024-52877 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, callback function SmmCreateVariableLockList () calls CreateVariableLockListInSmm (). In CreateVariableLockListInSmm (), it uses StrSize () to get variable name size and it could lead to a buffer over-read.
Weakness: CWE-126
Which versions are affected by CVE-2024-52877?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2024-52877?
No fix has been published for CVE-2024-52877 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-2024-52877 being exploited?
There is no known exploitation of CVE-2024-52877 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-gj42-cfph-mjj4.