vciy

CVE-2025-53522

INDEX BUILT · 2026-09-20

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Movable Type contains an issue with use of less trusted source

CVE-2025-535223 of 4 sources documented this
13

rank 13 = 0 + 13 + 0 + 0 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.00175  ·  without this subject the record ranks 13

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.3, 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 13

How much of the world it touches

NVD CPE configurations

0 products in the CPE ranges  ·  without this subject the record ranks 13

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 13

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$2,100over 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

$2,100 = $4.99M incident cost x 0.24048551839932833 exposure x 0.00175 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

0.00175EPSSNOT IN KEVas of 2026-09-20
Severity5.3 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-08-20, 335 days at 0.00, as of 2026-07-21. 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 Six Apart Ltd. Movable Type (Software…? 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.

Watch this record

Matches your own product list against every record this index holds, and tells you when one of them moves.

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.

Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactPartial integrity lossreceipt
Scored fromCVSS v3.0 · the CNA's vectorreceipt
Weakness classCWE-348 Use of Less Trusted Sourcereceipt
Published consequencesCWE-348: Access Control: Bypass Protection Mechanism, Gain Privileges or Assume Identity[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 21 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 CNA5.3 MEDIUMreceipt
Exploit probability0.00175 · top 93% of all CVEsreceipt
Assigned byjpcertreceipt
Recorded changes14 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productSix Apart Ltd. Movable Type (Software Edition); Six Apart Ltd. Movable Type Advanced (Software Edition); Six Apart Ltd. Movable Type Premium (Software Edition)…receipt

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

Movable Type contains an issue with use of less trusted source. If exploited, tampered email to reset a password may be sent by a remote unauthenticated attacker. receipt

NVD's analysis a second authority

weakness
CWE-348
also scored by
[email protected] 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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 ·…

check it yourself movabletype.org jvn.jp receipt

Movement the material steps

20 Aug 20250.0002
15 Jun 20260.00167 · scoring model v2026.06.15
21 Jul 20260.00175
Show all 14 observations
20 Aug 20250.0002
26 Aug 20250.00026
21 Sep 20250.00028
27 Oct 20250.0003
20 Dec 20250.00033
16 Jan 20260.00017
17 Jan 20260.00022
28 Jan 20260.00026
16 Mar 20260.00028
26 Mar 20260.00026
25 Apr 20260.00029
6 May 20260.00038
15 Jun 20260.00167
21 Jul 20260.00175

14 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 0.00175Published2025-08-20Index as of2026-07-21

The record had been public for 11 months when this index was last written.

Published 2025-08-20 receipt · Index as of 2026-07-21 derived

Siblings and hubs

Records related to this one

Fixed with these, by one advisory

Listed because one advisory covers them, not because they are the same defect. Each record's own state is on its own page.

Grouping: held values

Browse the index from here

These are index-wide views, not findings about CVE-2025-53522.

What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

Everything on this page is free. Public data. Withholding it protects nothing.