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CVE-2017-5754 · Meltdown

INDEX BUILT · 2026-09-20

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Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an…

CVE-2017-57544 of 4 sources documented this
52

rank 52 = 28 + 14 + 0 + 10 + 0

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.84172  ·  without this subject the record ranks 24

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.6, from NVD  ·  without this subject the record ranks 38

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 52

How much of the world it touches

NVD CPE configurations

20 products in the CPE ranges  ·  without this subject the record ranks 42

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 52

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$2.57Mover the next 30 days, if this record is yours
Movement-$103,000on 2025-08-16, the last material move, 1 year before this reading
Basisassumeda published average, not your estate

$2.57M = $4.99M incident cost x 0.6121449559255632 exposure x 0.84172 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

0.84172EPSSNOT IN KEVas of 2026-09-20
Severity5.6 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationpublic proof-of-conceptreceipt
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-11-21, 289 days at 0.84, as of 2026-09-06. arc-rules@v1

Foresight · where to check next

Microsoft WindowsAndroidTIBCOcheckpoint CheckFortinet FortiOSCisco Catalyst5754

This record is one instance of CWE-200, exposure of sensitive information to an unauthorized actor. The index holds 11146 prior instances of this class, 18 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

Running Intel Corporation Most Modern Operating…? Check your version

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Harm, if it fires from the vector and the weakness

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Reachneeds local access · low privileges required · no user interaction · high attack complexityreceipt
ImpactComplete confidentiality loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.0 · NVD's vectorreceipt
Weakness classCWE-200 Exposure of Sensitive Information to an Unauthorized Actorreceipt
Published consequencesCWE-200: Confidentiality: Read Application Data[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 6 Sep 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: Proof-of-concept published · 6 public repositories, 2018-01-04.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 6 public repositories2018-01-04receipt
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD5.6 MEDIUMreceipt
Exploit probability0.84172 · top 0.32% of all CVEsreceipt
Blast breadth20 products across 1 vendorderived
Assigned byintelreceipt
Recorded changes79 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected productIntel Corporation Most Modern Operating Systemsreceipt
Published rangesintel atom c c2308; intel atom c c2316; intel atom c c2338; intel atom c c2350receipt
Show all 20 published ranges
intel atom c c2308
intel atom c c2316
intel atom c c2338
intel atom c c2350
intel atom c c2358
intel atom c c2508
intel atom c c2516
intel atom c c2518
intel atom c c2530
intel atom c c2538
intel atom c c2550
intel atom c c2558
intel atom c c2718
intel atom c c2730
intel atom c c2738
intel atom c c2750
intel atom c c2758
intel atom c c3308
intel atom c c3338
intel atom c c3508

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

Meltdown is the common name for CVE-2017-5754. Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. cve-aliases@2026-08-27

NVD's analysis a second authority

severity
5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
weakness
CWE-200
affected versions
intel atom c c2308; intel atom c c2316; intel atom c c2338; and 17 more, listed in full below
also scored by
5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

check it yourself nvidia.custhelp.com usn.ubuntu.com usn.ubuntu.com codeaurora.org security.gentoo.org debian.org +14 morereceipt

Dated events

2022-02-04EPSS moved 0.38 to 0.872026-06-15EPSS moved 0.90 to 0.84

Movement the material steps

14 Apr 20210.37591
4 Feb 20220.87485 · crossed 0.50
12 Jun 20220.76928
7 Mar 20230.97505 · crossed 0.90 · scoring model v2023.03.01
17 Mar 20250.9251 · scoring model v2025.03.14
16 Aug 20250.89035 · crossed 0.90
18 Nov 20250.71281
21 Nov 20250.89591
15 Jun 20260.84172 · scoring model v2026.06.15
6 Sep 20260.84172
Show all 76 observations
14 Apr 20210.37591
4 Feb 20220.87485
13 Mar 20220.82652
12 Jun 20220.76928
1 Oct 20220.7494
7 Mar 20230.97505
8 May 20230.97532
8 Jul 20230.97465
15 Jul 20230.97489
14 Nov 20230.97461
15 Dec 20230.97384
10 Aug 20240.92687
12 Aug 20240.97384
17 Dec 20240.97132
17 Mar 20250.9251
19 Mar 20250.92707
2 Apr 20250.92671
18 Apr 20250.92857
26 Apr 20250.92627
7 May 20250.92286
11 May 20250.92601
14 May 20250.92384
15 May 20250.92601
27 May 20250.92563
10 Jun 20250.92857
13 Jun 20250.92707
15 Jun 20250.92394
18 Jun 20250.92234
24 Jun 20250.92353
28 Jun 20250.92394
30 Jun 20250.92234
6 Jul 20250.92362
11 Jul 20250.92475
20 Jul 20250.92353
23 Jul 20250.92531
26 Jul 20250.92381
14 Aug 20250.92422
16 Aug 20250.89035
18 Aug 20250.89591
19 Aug 20250.88875
27 Aug 20250.89591
1 Sep 20250.89849
16 Sep 20250.89938
1 Oct 20250.89849
24 Oct 20250.89938
28 Oct 20250.89591
6 Nov 20250.89495
18 Nov 20250.71281
21 Nov 20250.89591
1 Dec 20250.89849
16 Dec 20250.89495
4 Jan 20260.88928
25 Jan 20260.89035
7 Feb 20260.88928
18 Feb 20260.87296
5 Mar 20260.88106
13 Mar 20260.87621
21 Mar 20260.87237
22 Mar 20260.86842
27 Mar 20260.87752
9 Apr 20260.87621
21 Apr 20260.88229
23 Apr 20260.88802
26 Apr 20260.8869
19 May 20260.88249
20 May 20260.88381
22 May 20260.89587
26 May 20260.89689
30 May 20260.89324
2 Jun 20260.89689
5 Jun 20260.89595
15 Jun 20260.84172
23 Aug 20260.82608
30 Aug 20260.84172
5 Sep 20260.82608
6 Sep 20260.84172

76 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 0.84172Published · Public PoC2018-01-04Index as of2026-09-06

The record had been public for 8 years, 8 months when this index was last written.

Published 2018-01-04 receipt · Public PoC 2018-01-04 receipt · Index as of 2026-09-06 derived

The pattern, elsewhere

This record is one instance of CWE-200, exposure of sensitive information to an unauthorized actor. The index holds 11146 prior instances of this class, 18 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2026-20805 · Microsoft Windows 10 Version 1607matches 6 of 9KEV listed · 2026receipt
CVE-2023-21237 · Androidmatches 6 of 9KEV listed · 2023receipt
CVE-2018-5430 · TIBCO JasperReports Servermatches 6 of 9KEV listed · 2018receipt
CVE-2024-24919 · checkpoint Check Point Quantum Gateway, Spark…matches 5 of 9KEV listed · 2024receipt
CVE-2025-68686 · Fortinet FortiOSmatches 5 of 9KEV listed · 2026receipt
CVE-2026-20133 · Cisco Catalyst SD-WAN Managermatches 5 of 9KEV listed · 2026receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

11146 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

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