01 Record

CVE-2025-62626

Improper handling of insufficient entropy in the AMD CPUs could allow a local attacker to influence the values returned by the RDSEED instruction, potentially resulting in the consumption of

HighPUBLISHEDCNA: AMD

CNA base score7.2 CVSS v4.0CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

View raw JSON

02 Description

Improper handling of insufficient entropy in the AMD CPUs could allow a local attacker to influence the values returned by the RDSEED instruction, potentially resulting in the consumption of

03 Exploitation and scoring

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 ImpacttotalSuccessful exploitation gives total 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

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 6.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/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 2026-10-18.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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.

04 Metadata

Published

2025-11-21 18:52Z11 MO AGO

Last updated

2026-02-26 16:07Z8 MO AGO

Reserved

2025-10-16

Assigning CNA

AMD

Record state

PUBLISHED

Severity

High (CVSS 7.2)

CNA CVSS vector

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

Weaknesses

CWE-333Improper Handling of Insufficient Entropy in TRNGVariant

Data version

5.2

Document digest

7b96036e9e1ada36dac683ac4ec998e8aa0f7c7e138a33add01d0827e053060e

05 Affected products

VendorProductVersionsPlatforms

AMDAMD Ryzen™ 9000HX Series ProcessorsNot specified—

AMDAMD EPYC™ 9005 Series ProcessorsNot specified—

06 References

www.amd.comhttps://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7055.html

07 Fixed in

Debian 12

amd64-microcode
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

amd64-microcode
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

amd64-microcode
Fixed in 3.20251202.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.