CVE-2025-20623

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 8.6% of scored records. A rank, not a probability.

NVD base score

5.7 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-05-13 21:02Z1 YR AGO

Last updated

2025-11-03 19:35Z10 MO AGO

Reserved

2025-01-06

Assigning CNA

intel

Record state

PUBLISHED

Severity

Medium (CVSS 5.7)

CNA 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

Weaknesses

• CWE-1423Exposure of Sensitive Information caused by Shared Microarchitectural Predictor State that Influences Transient ExecutionBase

Data version

5.2

Document digest

60705a8f3bda707f52c2b125b1bc0cc1027141e4fde21ef45d3b754c841406f2

• intel.comhttps://intel.com/content/www/us/en/security-center/advisory/intel-sa-01247.html
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00021.html