Detections
Analytics
Siemens S7-1500 Missing Release of Memory after Effective Lifetime (CVE-2025-39929)
medium Tenable OT Security Plugin ID 505080
Synopsis
The remote OT asset is affected by a vulnerability.Description
In the Linux kernel, the following vulnerability has been resolved:smb: client: fix smbdirect_recv_io leak in smbd_negotiate() error path During tests of another unrelated patch I was able to trigger this error: Objects remaining on __kmem_cache_shutdown()
This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
Refer to the vendor advisory.See Also
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Plugin Details
Severity: Medium
ID: 505080
File Name: tenable_ot_siemens_CVE-2025-39929.nasl
Version: 1.2
Type: remote
Family: Tenable.ot
Published: 2/10/2026
Updated: 2/11/2026
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.4
Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C
CVSS Score Source: CVE-2025-39929
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 4.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.1.5, cpe:/o:siemens:siplus_s7-1500_cpu_firmware:3.1.5
Required KB Items: Tenable.ot/Siemens
Exploit Ease: No known exploits are available
Patch Publication Date: 6/10/2025
Vulnerability Publication Date: 6/10/2025
Reference Information
CVE: CVE-2025-39929
CWE: 401