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CVE-2026-104286

INDEX BUILT · 2026-10-18

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An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail…

CVE-2026-1042864 of 4 sources documented this
78

rank 78 = 40 + 25 + 0 + 5 + 8

rank@v1 · act now

Someone is already using it

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

EPSS 0.02201 · CISA KEV listed  ·  without this subject the record ranks 38

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from the CNA  ·  without this subject the record ranks 53

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 78

How much of the world it touches

NVD CPE configurations

3 products in the CPE ranges  ·  without this subject the record ranks 73

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 70

Hindsight · the state

0.02201EPSSKEV · LISTED
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementsteadyreceipt
STEADY10Holding near 0.02 across 2 observations. arc-rules@v1

Foresight · where to check next

CVE-2023-47246CVE-2022-29464CVE-2022-37042CVE-2022-41352VMware CloudJenkins104286

This record is one instance of CWE-22, improper limitation of a pathname to a restricted directory ('path traversal'). The index holds 10751 prior instances of this class, 97 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

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')receipt
Published consequencesCWE-22: Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands; Integrity: Modify Files or Directories; Confidentiality: Read Files or Directories…cwe-consequences@4.20
Ransomware campaign useUnknown to CISAreceipt

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 3 Oct 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.
CISA remediation statusoverdue since 2026-10-04receipt
CISA forensic triageRequired before remediation. BOD 26-04 directs that forensic triage data be collected before this is fixed, because applying the fix destroys the evidence of whether it was already used against you.receipt
CISA required actionApply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see…receipt
Show full CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

BOD 26-04 deadlineNot worked out yet. CISA scores every KEV entry for the directive, and this index has not loaded its scoring for this one.
Published to CISA KEVsame dayderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2026-10-01.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2026-10-01receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2026-10-01receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9.8 CRITICALreceipt
Exploit probability0.02201 · top 18% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byfortinetreceipt
Recorded changes16 · last 18 Oct 2026derived

Affected & Fixed Versions as published

Affected productFortinet FortiMailreceipt
Published rangesfortinet fortimail >= 7.2.0 <= 7.4.8; fortinet fortimail >= 7.6.0 <= 7.6.6; fortinet fortimail >= 8.0.0 <= 8.0.1receipt

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.

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$110,000over 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

$110,000 = $4.99M incident cost x 1 exposure x 0.02201 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.

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Attack path

Unauthenticated network requestno credentials, no interactionCISA KEV listingadded 10-01 · due 10-04Fortinet FortiMailCWE-22 path traversalFull compromise (C/I/A)C:H / I:H / A:Hmandates remediationexploits CWE-22data compromise

What it is stated by the CNA

An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9 may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests. receipt

NVD's analysis a second authority

weakness
CWE-22
affected versions
fortinet fortimail >= 7.2.0 <= 7.4.8; fortinet fortimail >= 7.6.0 <= 7.6.6; fortinet fortimail >= 8.0.0 <= 8.0.1
also scored by
psirt@fortinet.com 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself fortiguard.fortinet.com receipt

Dated events

2026-10-01Added to CISA KEV2026-10-04CISA remediation due

Movement the material steps

2 Oct 20260.01779
3 Oct 20260.02201
Show all 2 observations
2 Oct 20260.01779
3 Oct 20260.02201

2 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 0.02201Published · Public PoC · CISA KEV2026-10-01Index as of2026-10-03

Listed by CISA on the day it published and the record had been public for 2 days when this index was last written.

Published 2026-10-01 receipt · Public PoC 2026-10-01 receipt · CISA KEV 2026-10-01 receipt · Index as of 2026-10-03 derived

The pattern, elsewhere

This record is one instance of CWE-22, improper limitation of a pathname to a restricted directory ('path traversal'). The index holds 10751 prior instances of this class, 97 KEV-listed. The nearest of its KEV-listed records are drawn beside this. cwe-consequences@4.20

CVE-2023-47246matches 8 of 8KEV listed · 2023receipt
CVE-2022-29464matches 8 of 8KEV listed · 2022receipt
CVE-2022-37042matches 8 of 8KEV listed · 2022receipt
CVE-2022-41352matches 8 of 8KEV listed · 2022receipt
CVE-2026-59310 · VMware Cloud Foundationmatches 8 of 9KEV listed · 2026receipt
CVE-2024-23897 · Jenkinsmatches 8 of 9KEV listed · 2024receipt

"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

10751 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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