CVE-2025-20623 — Exposure of Sensitive Information caused by Shared Microarchitectural Predictor State that Influences Transient Execution in Intel-microcode

CWE-1423 — Exposure of Sensitive Information caused by Shared Microarchitectural Predictor State that Influences Transient Execution7 documents6 sources
Severity
5.7MEDIUMNVD
EPSS
0.1%
top 73.39%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Debian Intel-microcode
Timeline
PublishedMay 13
Latest updateMay 27

Description

Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some Intel(R) Core™ processors (10th Generation) may allow an authenticated user to potentially enable information disclosure via local access.

CVSS vector

CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Affected Packages1 packages

▶debiandebian/intel-microcode< intel-microcode 3.20250512.1~deb12u1 (bookworm)

🔴Vulnerability Details

3
OSV
intel-microcode vulnerabilities↗2025-05-27
▶
GHSA
GHSA-fv2p-m3fq-rq6h: Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some Intel(R) Core™ proc↗2025-05-13
▶
OSV
CVE-2025-20623: Exposure of sensitive information caused by shared microarchitectural predictor state that influences transient execution for some Intel(R) Core™ proc↗2025-05-13
▶

📋Vendor Advisories

3
Ubuntu
Intel Microcode vulnerabilities↗2025-05-27
▶
Red Hat
microcode_ctl: Exposure of sensitive information↗2025-05-13
▶
Debian
CVE-2025-20623: intel-microcode - Exposure of sensitive information caused by shared microarchitectural predictor ...↗2025
▶