vciy

CVE-2024-58136

INDEX BUILT · 2026-09-20

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Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class array key, a CVE-2024-4990 regression, as exploited in the…

CVE-2024-581364 of 4 sources documented this
76

rank 76 = 40 + 25 + 3 + 2 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.87757 · CISA KEV listed  ·  without this subject the record ranks 36

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 51

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-05-19  ·  without this subject the record ranks 73

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 74

Someone else already set the date

CISA KEV remediation due date

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

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.38Mover the next 30 days, if this record is yours
Movement+$1.22Mon 2025-11-21, the last material move, 9 months before this reading
Basisassumeda published average, not your estate

$4.38M = $4.99M incident cost x 1 exposure x 0.87757 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

0.87757EPSSKEV · LISTED
Severity9 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defensefix version namedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-06-15, 94 days at 0.88, as of 2026-09-17. 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
Mitre9 CRITICALreceipt
NVD9.8 CRITICALreceipt
What it costs
MitreComplete confidentiality, integrity and availability loss, with impact beyond the vulnerable componentreceipt
NVDComplete confidentiality, integrity and availability lossreceipt

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

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · no user interaction · high attack complexityreceipt
ImpactComplete confidentiality, integrity and availability loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-424 Improper Protection of Alternate Pathreceipt
Published consequencesCWE-424: Access Control: Bypass Protection Mechanism, Gain Privileges or Assume Identity[email protected]
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 in2.0.52receipt
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 2025-05-23receipt
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEV22 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2025-05-02.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed2025-05-02receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9 CRITICALreceipt
CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.87757 · top 0.25% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes53 · last 17 Sep 2026derived

Affected & Fixed Versions as published

Affected productyiiframework Yiireceipt
Published rangesyiiframework yii < 2.0.52receipt
Fixed in2.0.52receipt

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 05-02 · due 05-23yiiframework YiiCWE-424 weaknessAdjacent componentsscope changeFull compromise (C/I/A)C:H / I:H / A:Hmandates remediationexploits CWE-424scope changedata compromise

What it is stated by the CNA

Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class array key, a CVE-2024-4990 regression, as exploited in the wild in February through April 2025. 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-424
affected versions
yiiframework yii < 2.0.52
also scored by
[email protected] 9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

The CNA scored it 9 and NVD 9.8. Both are shown because both were published; we do not pick one.

check it yourself github.com github.com github.com github.com yiiframework.com receipt

Dated events

2025-05-02Added to CISA KEV2025-05-03EPSS moved 0.00 to 0.372025-05-23CISA remediation due2026-06-15EPSS moved 0.77 to 0.88

Movement the material steps

10 Apr 20250.00054
3 May 20250.36603 · crossed 0.10
23 Jul 20250.59796 · crossed 0.50
10 Aug 20250.71743
5 Sep 20250.83062
6 Nov 20250.6875
18 Nov 20250.44251 · crossed 0.50
21 Nov 20250.6875 · crossed 0.50
24 Mar 20260.57533
19 May 20260.78947
15 Jun 20260.87714 · scoring model v2026.06.15
17 Sep 20260.87757
Show all 42 observations
10 Apr 20250.00054
16 Apr 20250.00071
29 Apr 20250.0007
3 May 20250.36603
12 May 20250.384
15 May 20250.27366
26 May 20250.28578
15 Jun 20250.27366
17 Jun 20250.28177
20 Jun 20250.3456
24 Jun 20250.359
23 Jul 20250.59796
30 Jul 20250.65411
31 Jul 20250.69522
10 Aug 20250.71743
16 Aug 20250.74817
20 Aug 20250.7706
5 Sep 20250.83062
16 Oct 20250.85255
22 Oct 20250.73253
6 Nov 20250.6875
18 Nov 20250.44251
21 Nov 20250.6875
4 Dec 20250.75312
25 Dec 20250.78443
18 Jan 20260.62133
4 Feb 20260.67064
1 Mar 20260.67711
2 Mar 20260.6102
10 Mar 20260.5928
24 Mar 20260.57533
18 May 20260.59027
19 May 20260.78947
6 Jun 20260.77265
15 Jun 20260.87714
1 Jul 20260.87776
12 Jul 20260.84758
19 Aug 20260.8464
6 Sep 20260.8449
7 Sep 20260.84609
15 Sep 20260.87634
17 Sep 20260.87757

42 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 0.87757Published2025-04-10CISA KEV2025-05-02Index as of2026-09-17

Listed by CISA 22 days after it published and the record had been public for 1 year, 5 months when this index was last written.

Published 2025-04-10 receipt · CISA KEV 2025-05-02 receipt · Index as of 2026-09-17 derived

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