CVE catalog
CVE-2023-34440
intel-microcode: CVE-2023-34440
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.25% · Oct 25, 2026
Improper input validation in UEFI firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | intel-microcode | sid | 3.20260227.1 | fixed |
| Debian | intel-microcode | forky | 3.20260227.1 | fixed |
| Debian | intel-microcode | trixie | 3.20251111.1~deb13u1 | fixed |
| Debian | intel-microcode | trixie-security | 3.20250812.1~deb13u1 | fixed |
| Debian | intel-microcode | bookworm | 3.20251111.1~deb12u1 | fixed |
| Debian | intel-microcode | bookworm-security | 3.20250812.1~deb12u1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | intel-microcode | source | sid | 3.20250211.1 | not yet assigned | Not reported | [1095805] |
| Debian | intel-microcode | source | forky | 3.20250211.1 | not yet assigned | Not reported | [1095805] |
| Debian | intel-microcode | source | trixie | 3.20250211.1 | not yet assigned | Not reported | [1095805] |
| Debian | intel-microcode | source | bookworm | 3.20250211.1~deb12u1 | not yet assigned | Not reported | [1095805] |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhea-2025_2427.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-34440]
- [https://osv.dev/vulnerability/DLA-4095-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-34440]
- [https://security-tracker.debian.org/tracker/CVE-2023-34440]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-34440.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0323.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]