// For flags

CVE-2025-25186

Net::IMAP vulnerable to possible DoS by memory exhaustion

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Starting in version 0.3.2 and prior to versions 0.3.8, 0.4.19, and 0.5.6, there is a possibility for denial of service by memory exhaustion in `net-imap`'s response parser. At any time while the client is connected, a malicious server can send can send highly compressed `uid-set` data which is automatically read by the client's receiver thread. The response parser uses `Range#to_a` to convert the `uid-set` data into arrays of integers, with no limitation on the expanded size of the ranges. Versions 0.3.8, 0.4.19, 0.5.6, and higher fix this issue. Additional details for proper configuration of fixed versions and backward compatibility are available in the GitHub Security Advisory.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-02-03 CVE Reserved
  • 2025-02-10 CVE Published
  • 2025-02-11 EPSS Updated
  • 2025-02-12 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
  • CWE-405: Asymmetric Resource Consumption (Amplification)
  • CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)
  • CWE-770: Allocation of Resources Without Limits or Throttling
  • CWE-789: Memory Allocation with Excessive Size Value
  • CWE-1287: Improper Validation of Specified Type of Input
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Ruby
Search vendor "Ruby"
 Net-imap
Search vendor "Ruby" for product "Net-imap"
 >= 0.3.2 < 0.3.8
Search vendor "Ruby" for product "Net-imap" and version " >= 0.3.2 < 0.3.8"
en
Affected
Ruby
Search vendor "Ruby"
 Net-imap
Search vendor "Ruby" for product "Net-imap"
 >= 0.4.0 < 0.4.19
Search vendor "Ruby" for product "Net-imap" and version " >= 0.4.0 < 0.4.19"
en
Affected
Ruby
Search vendor "Ruby"
 Net-imap
Search vendor "Ruby" for product "Net-imap"
 >= 0.5.0 < 0.5.6
Search vendor "Ruby" for product "Net-imap" and version " >= 0.5.0 < 0.5.6"
en
Affected