CVE-2025-29946: Insufficient or Incomplete Data Removal in Hardware Component in SEV firmware doesn't…

4

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1
Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.16%

ahead of 4% of scored CVEs · Oct 14, 2026

Affects

AMD

AMD EPYC™ 9005 Series Processors and 1 more

CVSS base

4.5

Medium · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

No

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (AMD AMD EPYC™ 9005 Series Processors, AMD AMD EPYC™ Embedded 9005 Series Processors).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
AMD	AMD EPYC™ 9005 Series Processors	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP
AMD	AMD EPYC™ Embedded 9005 Series Processors	versions not specified by the source	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

High

Attack requirements

Present

Privileges required

High

User interaction

None

Scope

X

Confidentiality (vulnerable system)

None

Integrity (vulnerable system)

None

Availability (vulnerable system)

None

Confidentiality (subsequent)

High

Integrity (subsequent)

High

Availability (subsequent)

None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
4.5	CVSS 4.0	Medium	—	—	psirt@amd.com via NIST National Vulnerability Database
4.5	CVSS 4.0	Medium	—	—	AMD via CVE Program (cve.org) e CISA ADP

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

(score shown at the top: psirt@amd.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-1301

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.16%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · amd/amd epyc™ 9005 series processors, amd/amd epyc™ embedded 9005 series processors
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 4.5
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
Feb 10, 2026 · AMD

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

1 on the record

www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html
NIST National Vulnerability Database

Elsewhere on this site

AMD
every CVE for this vendor

CWE-1301
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2025-54509 Improper access control for register interface in the Input-Output Memory Management… Jun 9, 2026
High CVE-2026-0432 Incorrect Default Permissions in AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics May 14, 2026
Medium CVE-2025-0045 Classic Buffer Overflow in AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics May 14, 2026
High CVE-2025-48512 Incorrect Default Permissions in AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics (formerly codenamed "Renoir") May 14, 2026
High CVE-2025-61972 Missing lock bit protection for NBIO registers could allow a local admin-privileged… May 13, 2026
Medium CVE-2025-61971 Missing lock bit protection for NBIO registers could allow a local admin-privileged… May 13, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-29946 is "Insufficient or Incomplete Data Removal in Hardware Component in SEV firmware doesn't…", rated Medium. It affects AMD EPYC™ 9005 Series Processors (AMD); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 4.5 describes technical severity. EPSS 0.16% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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