CVE-2021-0131Network attack vector

Authenticated information disclosure via weak API randomness

Published Jun 9, 2021 · Updated Aug 3, 2024

Weak PRNG use in Intel Security Libraries for Data Center before 3.3 allows remote authenticated users to disclose information via a network API. Intel has not disclosed the affected API, the values generated with the weak PRNG, or how predictable output exposes information. Network authentication and user interaction are required, and the nature of the exposed information is not published.

CVSS severity4.6
Medium
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak PRNG use in Intel Security Libraries for Data Center before 3.3 allows remote authenticated users to disclose information via a network API. Intel has not disclosed the affected API, the values generated with the weak PRNG, or how predictable output exposes information. Network authentication and user interaction are required, and the nature of the exposed information is not published.

The record

CVE
CVE-2021-0131
Published
Jun 9, 2021
Updated
Aug 3, 2024
Vendor
Intel Corporation
Product
Intel Security Libraries for Data Center (Intel SecL-DC)
Classifications
CWE-338
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before version 3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Intel Corporation · Intel Security Libraries for Data Center (Intel SecL-DC)version=before version 3.3

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.6Intel CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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