Critical Vulnerability in amd64-microcode Package: CVE-2025-62626
Summary
DEBIAN-CVE-2025-62626: ... Affects amd64-microcode versions 0.20120117-1 – 3.20250311.1~deb12u1. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The amd64-microcode package is essential for providing microcode updates for AMD processors on Debian systems. It ensures that the CPU operates efficiently and securely by applying necessary updates that fix bugs and vulnerabilities. This package is crucial for maintaining system stability and security, especially in environments that rely on AMD hardware.
Vulnerability Detail
CVE-2025-62626 is a critical vulnerability affecting the amd64-microcode package across multiple Debian versions (11, 12, 13, and 14). The vulnerability originates from insufficient validation of microcode updates, which could allow an attacker to exploit the system by injecting malicious microcode. This could lead to unauthorized access, data corruption, or system crashes, posing significant risks to system integrity and confidentiality.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, users can disable microcode updates until a patched version is installed. This can be done by modifying the boot parameters in the GRUB configuration. Edit the /etc/default/grub file and add 'nomicromod' to the GRUB_CMDLINE_LINUX_DEFAULT line, then run 'sudo update-grub' to apply the changes.
Conclusion
CVE-2025-62626 presents a significant risk to systems using the amd64-microcode package across various Debian versions. It is crucial for users to update their packages promptly to mitigate potential exploitation. Utilizing tools like Vulert can help monitor vulnerabilities effectively.
See every vulnerability recorded for amd64-microcode →
FAQ
CVE-2025-62626 is a critical vulnerability in the amd64-microcode package that affects multiple Debian versions, allowing potential exploitation through malicious microcode updates.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
The risks include unauthorized access to the system, potential data corruption, and system crashes, which can compromise the integrity and confidentiality of sensitive information.
Yes, a patched version of the amd64-microcode package is available. Users should update their package to the latest version to mitigate the vulnerability.
If immediate updates are not possible, consider applying the temporary workaround by disabling microcode updates until you can install the patched version.
References
Related vulnerabilities
Recent vulnerabilities recorded for amd64-microcode.
