Detections
Analytics
SCA: security update for net-imap (GHSA-j3g3-5qv5-52mj)
medium Tenable Cloud Security Plugin ID 434022
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to
versions 0.5.7, 0.4.20, 0.3.9, and 0.2.5, there is a possibility for denial of service by memory
exhaustion when net-imap reads server responses. At any time while the client is connected, a malicious
server can send can send a "literal" byte count, which is automatically read by the client's receiver
thread. The response reader immediately allocates memory for the number of bytes indicated by the server
response. This should not be an issue when securely connecting to trusted IMAP servers that are well-
behaved. It can affect insecure connections and buggy, untrusted, or compromised servers (for example,
connecting to a user supplied hostname). This issue has been patched in versions 0.5.7, 0.4.20, 0.3.9, and
0.2.5. (CVE-2025-43857)
See Also
Plugin Details
Severity: Medium
ID: 434022
Version: Revision 1.14
Type: Local
Family: SCA Checks
Published: 8/19/2025
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.67
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2025-43857
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 6
Threat Score: 2.3
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 4/28/2025
Vulnerability Publication Date: 4/28/2025
Reference Information
CVE: CVE-2025-43857