Distribution advisory
This page covers CVE-2025-31648 as tracked by Ubuntu, for the package intel-microcode. The fix is available in version 3.20260210.0ubuntu0.25.10.1; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. Rated impact: confidentiality low, integrity low, availability none.
CVSS metrics in full
The score comes from this vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- Attack vector: Local — a local account, shell or session on the host is needed.
- Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
- Attack requirements: Present — the target has to be in a particular state for the attack to work.
- Privileges required: High — administrative rights are needed first.
- User interaction: None — nobody has to be tricked into anything.
- Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
- Integrity impact: Low — limited, and the attacker does not choose what is affected.
- Availability impact: None.
Weakness class
UBUNTU-CVE-2025-31648 is classified as CWE-229: Improper Handling of Values. The product does not properly handle when the expected number of values for parameters, fields, or arguments is not provided in input, or if those values are undefined.
Affected software
UBUNTU-CVE-2025-31648 is recorded against 1 package.
- intel-microcode (fixed in 3.20260210.0ubuntu0.25.10.1)
Timeline and source
Published on 10 February 2026 and last revised on 4 March 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.cve.org (Report)
github.com (Report)
intel.com (Report)
ubuntu.com (Advisory)
Other advisories for this package
intel-microcode has other advisories on record. If you are patching this one, these are worth checking on the same host:
Same weakness in other software
These advisories are the same class of weakness (CWE-229: Improper Handling of Values) in other software:
