vciy

CVE-2022-42475

INDEX BUILT · 2026-09-20

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A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through…

CVE-2022-424754 of 4 sources documented this
81

rank 81 = 40 + 25 + 0 + 10 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.99474 · CISA KEV listed  ·  without this subject the record ranks 41

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 56

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 81

How much of the world it touches

NVD CPE configurations

18 products in the CPE ranges  ·  without this subject the record ranks 71

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 75

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.96Mover the next 30 days, if this record is yours
Movement+$2.04Mon 2023-03-22, the last material move, 3 years, 5 months before this reading
Basisassumeda published average, not your estate

$4.96M = $4.99M incident cost x 1 exposure x 0.99474 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

0.99474EPSSKEV · LISTED
Severity9.3 CRITICALreceipt
Harmtotal loss · unauthenticated · ransomware-linkedreceipt
Exploitationransomware use knownreceipt
Defenseunaffected versions publishedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2025-03-17, 536 days at 0.99, as of 2026-09-04. 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

Sources disagree here.

Severity score
Fortinet9.3 CRITICALreceipt
NVD9.8 CRITICALreceipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

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Harm, if it fires from the vector and the weakness

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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-197 Numeric Truncation Errorreceipt
Published consequencesCWE-197: Integrity: Modify Memory[email protected]
Ransomware campaign useKnown (CISA)receipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchfortios 6.0.15; fortios 6.0.16; fortios 6.2.12; fortios 6.4.10; fortios 6.4.11; fortios 7.0.8receipt
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 2023-01-03receipt
CISA required actionApply updates per vendor instructions.receipt

Exploit Status & Known PoCs a ladder, not a score

Current rung: Ransomware campaign use known, 2022-12-13.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 8 public repositories2023-01-17receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2022-12-13receipt
  • RUNG 4Ransomware campaign use known2022-12-13receipt

Authority who says so

CVSS, the CNA9.3 CRITICALreceipt
CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.99474 · top 0.06% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned byfortinetreceipt
Recorded changes89 · last 16 Sep 2026derived

Affected & Fixed Versions as published

Affected productFortinet FortiProxy; Fortinet FortiOSreceipt
Published rangesfortinet fortios >= 5.0.0 <= 5.0.14; fortinet fortios >= 5.2.0 <= 5.2.15; fortinet fortios >= 5.4.0 <= 5.4.13; fortinet fortios >= 5.6.0 <= 5.6.14receipt
Show all 18 published ranges
fortinet fortios >= 5.0.0 <= 5.0.14
fortinet fortios >= 5.2.0 <= 5.2.15
fortinet fortios >= 5.4.0 <= 5.4.13
fortinet fortios >= 5.6.0 <= 5.6.14
fortinet fortios >= 6.0.0 < 6.0.16
fortinet fortios >= 6.2.0 < 6.2.12
fortinet fortios >= 6.4.0 < 6.4.11
fortinet fortios >= 7.0.0 < 7.0.9
fortinet fortios >= 7.2.0 < 7.2.3
fortinet fortiproxy >= 1.0.0 <= 1.0.7
fortinet fortiproxy >= 1.1.0 <= 1.1.6
fortinet fortiproxy >= 1.2.0 <= 1.2.13
fortinet fortiproxy >= 2.0.0 < 2.0.12
fortinet fortiproxy >= 7.0.0 < 7.0.8
fortinet fortiproxy >= 7.2.0 < 7.2.2
fortinet fortios >= 6.0.0 < 6.0.15
fortinet fortios >= 6.4.0 < 6.4.10
fortinet fortios >= 7.0.0 < 7.0.8

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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Attack path

Unauthenticated network requestno credentials, no interactionCISA KEV listingadded 12-13 · due 01-03Fortinet FortiOSCWE-197 weaknessFull compromise (C/I/A)C:H / I:H / A:Hmandates remediationexploits CWE-197data compromise

What it is stated by the CNA

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests. receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-197; CWE-787
affected versions
fortinet fortios >= 5.0.0 <= 5.0.14; fortinet fortios >= 5.2.0 <= 5.2.15; fortinet fortios >= 5.4.0 <= 5.4.13; and 15 more, listed in full below
also scored by
[email protected] 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CNA scored it 9.3 and NVD 9.8. Both are shown because both were published; we do not pick one.

check it yourself fortiguard.com receipt

Dated events

2022-12-13Added to CISA KEV2023-01-03CISA remediation due2023-01-19EPSS moved 0.01 to 0.152025-03-17EPSS moved 0.26 to 0.942026-06-15EPSS moved 0.94 to 0.99

Movement the material steps

3 Jan 20230.01156
19 Jan 20230.15362 · crossed 0.10
22 Feb 20230.01156 · crossed 0.10
7 Mar 20230.07717 · scoring model v2023.03.01
22 Mar 20230.48633 · crossed 0.10
5 Apr 20230.36201
17 Dec 20240.24539
17 Mar 20250.93536 · crossed 0.50 and 0.90 · scoring model v2025.03.14
15 Jun 20260.99474 · scoring model v2026.06.15
Show all 75 observations
3 Jan 20230.01156
19 Jan 20230.15362
22 Feb 20230.01156
7 Mar 20230.07717
22 Mar 20230.48633
5 Apr 20230.36201
8 May 20230.42232
15 Jun 20230.46097
8 Jul 20230.46042
23 Sep 20230.38721
9 Nov 20230.43915
22 Nov 20230.41073
3 Dec 20230.38376
9 Jan 20240.38220
22 Jan 20240.38820
4 Feb 20240.43161
16 Feb 20240.41478
29 Feb 20240.41025
13 Mar 20240.38206
26 Mar 20240.42506
8 Apr 20240.41883
5 May 20240.38259
14 Jun 20240.32117
12 Jul 20240.32449
25 Jul 20240.32711
9 Aug 20240.27418
17 Dec 20240.24539
29 Dec 20240.25733
17 Mar 20250.93536
19 Mar 20250.93442
20 Mar 20250.93422
22 Mar 20250.93536
23 Mar 20250.93442
24 Mar 20250.93536
27 Mar 20250.93238
28 Mar 20250.93193
29 Mar 20250.93092
30 Mar 20250.93193
31 Mar 20250.92895
1 Apr 20250.93013
2 Apr 20250.92863
15 Apr 20250.93167
19 Apr 20250.93238
23 Apr 20250.93183
30 Apr 20250.93031
3 May 20250.92862
5 May 20250.93117
6 May 20250.9293
15 May 20250.93207
28 May 20250.93065
4 Jun 20250.92792
5 Jun 20250.92758
8 Jun 20250.9285
12 Jun 20250.9302
15 Jun 20250.93196
27 Jun 20250.93141
13 Jul 20250.94003
16 Aug 20250.9396
17 Aug 20250.94003
5 Sep 20250.9394
8 Sep 20250.94003
16 Sep 20250.9394
21 Sep 20250.94003
12 Oct 20250.9394
18 Nov 20250.92842
21 Nov 20250.9394
9 Dec 20250.94003
13 Dec 20250.94062
13 Jan 20260.94005
18 Jan 20260.94062
15 Feb 20260.93984
20 May 20260.93919
25 May 20260.94005
13 Jun 20260.93919
15 Jun 20260.99474

75 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 0.99474CISA KEV2022-12-13Published2023-01-02Public PoC2023-01-17Index as of2026-09-04

The record had been public for 3 years, 8 months when this index was last written.

No material movement in 81 days as of the last ingest this index recorded.

CISA KEV 2022-12-13 receipt · Published 2023-01-02 receipt · Public PoC 2023-01-17 receipt · Index as of 2026-09-04 derived

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fortinet fortiproxy

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