VDB-319728 · CVE-2025-20613 · intel-sa-01312

Intel TDX prng seed

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.
2.9	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Intel TDX. This affects an unknown part. The manipulation results in prng seed. This vulnerability was named CVE-2025-20613. The attack needs to be approached locally. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Intel TDX (the affected version unknown). Affected is an unknown part. The manipulation with an unknown input leads to a prng seed vulnerability. CWE is classifying the issue as CWE-337. A Pseudo-Random Number Generator (PRNG) is initialized from a predictable seed, such as the process ID or system time. This is going to have an impact on confidentiality. CVE summarizes:

Predictable Seed in Pseudo-Random Number Generator (PRNG) in the firmware for some Intel(R) TDX may allow an authenticated user to potentially enable information disclosure via local access.

The advisory is shared for download at intel.com. This vulnerability is traded as CVE-2025-20613 since 01/08/2025. The exploitability is told to be difficult. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/01/2025). The MITRE ATT&CK project declares the attack technique as T1600.001.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-1785). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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

Intel

Name

License

commercial

Website

Vendor: https://www.intel.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

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

CVSSv3info

VulDB Meta Base Score: 2.9
VulDB Meta Temp Score: 2.9

VulDB Base Score: 2.5
VulDB Temp Score: 2.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector (intel): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Prng seed
CWE: CWE-337 / CWE-331 / CWE-330
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/08/2025 CVE reserved
08/12/2025 +215 days Advisory disclosed
08/12/2025 +0 days VulDB entry created
11/01/2025 +81 days VulDB entry last update

Sourcesinfo

Vendor: intel.com

Advisory: intel-sa-01312
Status: Confirmed

CVE: CVE-2025-20613 (🔒)
GCVE (CVE): GCVE-0-2025-20613
GCVE (VulDB): GCVE-100-319728
CERT Bund: WID-SEC-2025-1785 - Intel Prozessoren: Mehrere Schwachstellen

Entryinfo

Created: 08/12/2025 20:33
Updated: 11/01/2025 23:32
Changes: 08/12/2025 20:33 (72), 11/01/2025 23:32 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.