Intel Processors improper isolation or compartmentalization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Intel Processors. The affected element is an unknown function. Executing a manipulation can lead to improper isolation or compartmentalization. This vulnerability is tracked as CVE-2025-20109. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Intel Processors (version unknown). It has been declared as critical. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a improper isolation or compartmentalization vulnerability. The CWE definition for the vulnerability is CWE-653. The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access.

The advisory is shared for download at intel.com. This vulnerability was named CVE-2025-20109 since 10/10/2024. The exploitation appears to be difficult. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 259911 (Linux Distros Unpatched Vulnerability : CVE-2025-20109), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (259911) and CERT Bund (WID-SEC-2025-1785). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • SUSE Linux
  • Dell PowerEdge
  • Lenovo Computer
  • HPE ProLiant
  • SUSE openSUSE
  • HP Computer
  • Dell PowerScale
  • Dell Computer
  • Dell Avamar
  • Intel Prozessor
  • Dell NetWorker

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (intel): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper isolation or compartmentalization
CWE: CWE-653
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 259911
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-20109

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/10/2024 CVE reserved
08/12/2025 +306 days Advisory disclosed
08/12/2025 +0 days VulDB entry created
05/01/2026 +262 days VulDB entry last update

Sourcesinfo

Vendor: intel.com

Advisory: intel-sa-01249
Status: Confirmed

CVE: CVE-2025-20109 (🔒)
GCVE (CVE): GCVE-0-2025-20109
GCVE (VulDB): GCVE-100-319732
CERT Bund: WID-SEC-2025-1785 - Intel Prozessoren: Mehrere Schwachstellen

Entryinfo

Created: 08/12/2025 20:34
Updated: 05/01/2026 08:47
Changes: 08/12/2025 20:34 (72), 08/31/2025 19:36 (2), 10/30/2025 09:36 (7), 11/01/2025 23:32 (1), 05/01/2026 08:44 (1), 05/01/2026 08:47 (4)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!