CVE-2025-48827 (GCVE-0-2025-48827)

Vulnerability from cvelistv5 – Published: 2025-05-27 00:00 – Updated: 2025-05-27 18:03
VLAI Shadowserver KEVIntel
Summary
vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025.
Severity
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-424 - Improper Protection of Alternate Path
Assigner
References
Impacted products
Vendor Product Version
vBulletin vBulletin Affected: 5.0.0 , ≤ 5.7.5 (custom)
Affected: 6.0.0 , ≤ 6.0.3 (custom)
Create a notification for this product.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: af6742f3-be63-4f44-8b19-a63c5c0195a9

Vulnerability ID: CVE-2025-48827

Status: Confirmed

Status Updated: 2025-07-31 11:19 UTC

Exploited: Yes

Characteristics
Severity: 100.0
Timestamps
First Seen: 2025-07-31
Asserted: 2025-07-31
Last Seen: 2025-07-31
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: vBulletin / vBulletin | Class: cms | Severity: Critical (CVSS 10) | IoT: no | In CISA KEV: no | Honeypot connections on 2025-07-31: 2
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class cms
7D Avg 0
Vendor vBulletin
30D Avg 0
90D Avg 0
Product vBulletin
Cisa Kev no
Connections 2
Observation Date 2025-07-31
Vulnerability Class CVSS
Vulnerability Score 10
Vulnerability Severity Critical
References
Created: 2026-06-30 11:39 UTC | Updated: 2026-06-30 11:39 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 16d4b1e6-0f2d-4641-8c9c-577951135e7b

Vulnerability ID: CVE-2025-48827

Status: Confirmed

Status Updated: 2026-06-03 10:06 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-03
Asserted: 2026-06-03
Scope
Notes: KEVIntel entry: vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP... | Affected: vBulletin / vBulletin | CVSS: 10.0 (CRITICAL) | EPSS: 0.69649 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP...
Vendor vBulletin
Product vBulletin
Added Date 2026-06-03T10:06:54.268Z
Cvss Score 10.0
Epss Score 0.69649
Cvss Severity CRITICAL
Epss Percentile 0.99279
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.