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CVE-2024-55556

INDEX BUILT · 2026-09-20

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A vulnerability in Crater Invoice allows an unauthenticated attacker with knowledge of the APP_KEY to achieve remote command execution on the server…

CVE-2024-555562 of 4 sources documented this
12

rank 12 = 11 + 0 + 1 + 0 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.44126  ·  without this subject the record ranks 1

What it costs you if it fires

NVD CVSS base score, then the CNA's own

no CVSS held by anyone  ·  without this subject the record ranks 12

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-01-24  ·  without this subject the record ranks 11

How much of the world it touches

NVD CPE configurations

0 products in the CPE ranges  ·  without this subject the record ranks 12

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 12

Hindsight · the state

0.44126EPSSNOT IN KEVas of 2026-09-20
Severitynot scored
Harmnot stated
Exploitationnone in held sources
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 25 days at 0.44, as of 2026-07-10. arc-rules@v1

Foresight · where to check next

PTC WindchillCisco SecureMicrosoftFortra GoAnywhereSonicWall SMA1000SolarWinds Web55556

This record is one instance of CWE-502, deserialization of untrusted data. The index holds 3288 prior instances of this class, 76 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

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Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signal

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Harm, if it fires from the vector and the weakness

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ReachNo CVSS vector in held sources, so no reach or impact can be stated.
Weakness classCWE-502 Deserialization of Untrusted Datareceipt
Published consequencesCWE-502: Integrity: Modify Application Data, Unexpected State; Availability: DoS: Resource Consumption (CPU); Other: Varies by Context[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 10 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

Exploit probability0.44126 · top 1% of all CVEsreceipt
Assigned bymitrereceipt
Recorded changes33 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productNot named in held sources. Without a product name this record cannot be matched against an inventory, by us or by anyone.

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

A vulnerability in Crater Invoice allows an unauthenticated attacker with knowledge of the APP_KEY to achieve remote command execution on the server by manipulating the laravel_session cookie, exploiting arbitrary deserialization through the encrypted session data. The exploitation vector of this vulnerability relies on an attacker obtaining Laravel's secret APP_KEY, which would allow them to decrypt and manipulate session cookies (laravel_session) containing serialized data. By altering this data and re-encrypting it with the APP_KEY, the attacker could trigger arbitrary deserialization on the server, potentially leading to remote command execution (RCE). receipt

Read the rest of the CNA's description

The vulnerability is primarily exploited by accessing an exposed cookie and manipulating it using the secret key to gain malicious access to the server.

NVD's analysis a second authority

weakness
CWE-502
also scored by
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself synacktiv.com github.com synacktiv.com receipt

Dated events

2025-03-17EPSS moved 0.00 to 0.532026-06-15EPSS moved 0.87 to 0.44

Movement the material steps

8 Jan 20250.00045
17 Mar 20250.53435 · crossed 0.10 and 0.50 · scoring model v2025.03.14
29 Mar 20250.70258
15 Apr 20250.82185
15 Jun 20260.4356 · crossed 0.50 · scoring model v2026.06.15
10 Jul 20260.44126

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 33 observations
8 Jan 20250.00045
13 Mar 20250.00065
15 Mar 20250.00157
17 Mar 20250.53435
23 Mar 20250.6166
24 Mar 20250.53435
25 Mar 20250.63314
29 Mar 20250.70258
30 Mar 20250.63314
3 Apr 20250.63962
15 Apr 20250.82185
9 May 20250.82143
14 May 20250.76558
29 May 20250.77981
17 Jun 20250.80857
15 Jul 20250.7976
16 Jul 20250.82558
18 Jul 20250.8195
23 Jul 20250.7976
3 Nov 20250.84379
15 Nov 20250.85568
18 Nov 20250.80543
21 Nov 20250.85568
26 Nov 20250.8111
24 Jan 20260.86865
15 Feb 20260.79379
13 Apr 20260.82239
18 Apr 20260.83886
20 Apr 20260.83502
21 Apr 20260.84685
29 May 20260.86575
15 Jun 20260.4356
10 Jul 20260.44126

33 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 0.44126Published2025-01-07Index as of2026-07-10

Exploit probability more than doubled between 2025-03-13 and 2025-03-15 (0.00065 → 0.00157) and the record had been public for 1 year, 6 months when this index was last written.

Published 2025-01-07 receipt · Index as of 2026-07-10 derived

The pattern, elsewhere

This record is one instance of CWE-502, deserialization of untrusted data. The index holds 3288 prior instances of this class, 76 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2026-12569 · PTC Windchill PDMLinknothing comparable heldKEV listed · 2026receipt
CVE-2026-20131 · Cisco Secure Firewall Management Center (FMC)nothing comparable heldKEV listed · 2026receipt
CVE-2026-45659 · Microsoft SharePoint Enterprise Server 2016nothing comparable heldKEV listed · 2026receipt
CVE-2025-10035 · Fortra GoAnywhere MFTnothing comparable heldKEV listed · 2025receipt
CVE-2025-23006 · SonicWall SMA1000nothing comparable heldKEV listed · 2025receipt
CVE-2025-26399 · SolarWinds Web Help Desknothing comparable heldKEV listed · 2025receipt

"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

3288 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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