vciy

CVE-2025-3301

INDEX BUILT · 2026-09-20

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DPA Countermeasures Unavailable for Certain Cryptographic Operations on Series 2 Devices

CVE-2025-33013 of 4 sources documented this
3

rank 3 = 0 + 3 + 0 + 0 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00216  ·  without this subject the record ranks 3

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 1.0, from the CNA  ·  without this subject the record ranks 0

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 3

How much of the world it touches

NVD CPE configurations

0 products in the CPE ranges  ·  without this subject the record ranks 3

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 3

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$6,190over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$6,190 = $4.99M incident cost x 0.5743756121449558 exposure x 0.00216 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.00216EPSSNOT IN KEVas of 2026-09-20
Severity1 LOWreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-04-30, 457 days at 0.00, as of 2026-07-31. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running silabs.com Series 2 SoCs and associated…? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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What counts as a move

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Record your call

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AcceptDeferPatch by…Not affectedMitigated

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachneeds physical access · no privileges required · no user interaction · low attack complexity · attack requirements presentreceipt
ImpactPartial confidentiality, integrity and availability lossreceipt
Scored fromCVSS v4.0 · the CNA's vectorreceipt
Weakness classCWE-1255 Comparison Logic is Vulnerable to Power Side-Channel Attacksreceipt
Published consequencesCWE-1255: Confidentiality, Integrity, Availability, Access Control, Accountability, Authentication, Authorization, Non-Repudiation: Modify Memory, Read Memory, Read Files or Directories, Modify Files…[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 31 Jul 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA1 LOWreceipt
Exploit probability0.00216 · top 88% of all CVEsreceipt
Assigned bySilabsreceipt
Recorded changes24 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productsilabs.com Series 2 SoCs and associated modulesreceipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

DPA countermeasures are unavailable for ECDH key agreement and EdDSA signing operations on Curve25519 and Curve448 on all Series 2 modules and SoCs due to a lack of hardware and software support. A successful DPA attack may result in exposure of confidential information. The best practice is to use the impacted crypto curves and operations with ephemeral keys to reduce the number of DPA traces that can be collected. receipt

NVD's analysis a second authority

weakness
CWE-1255
also scored by
[email protected] 1 CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/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

check it yourself community.silabs.com receipt

Movement the material steps

30 Apr 20250.00018
15 Jun 20260.00184 · scoring model v2026.06.15
31 Jul 20260.00216
Show all 24 observations
30 Apr 20250.00018
5 May 20250.00024
31 May 20250.00026
6 Jul 20250.00027
29 Aug 20250.00035
25 Sep 20250.00023
26 Sep 20250.00022
7 Oct 20250.00026
18 Nov 20250.0004
21 Nov 20250.00026
23 Nov 20250.00028
3 Dec 20250.00027
2 Jan 20260.00029
13 Jan 20260.00036
18 Jan 20260.00041
23 Jan 20260.00046
23 Feb 20260.00158
1 Apr 20260.00327
7 Jun 20260.00291
9 Jun 20260.00223
10 Jun 20260.00291
15 Jun 20260.00184
20 Jul 20260.00201
31 Jul 20260.00216

24 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00216Published2025-04-29Index as of2026-07-31

The record had been public for 1 year, 3 months when this index was last written.

Published 2025-04-29 receipt · Index as of 2026-07-31 derived

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