CVE-2020-35164

Local data disclosure and modification through timing observations

Published Jul 11, 2022 · Updated Sep 16, 2024

Observable timing discrepancy in Dell BSAFE Crypto-C Micro Edition before 4.1.5 allows local users to read or modify sensitive data. Dell identifies the timing discrepancy but does not disclose the affected cryptographic operation or its input-dependent computation. Exploitation requires local access and a high-complexity timing observation; the published impact excludes availability.

CVSS severity6.7
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable timing discrepancy in Dell BSAFE Crypto-C Micro Edition before 4.1.5 allows local users to read or modify sensitive data. Dell identifies the timing discrepancy but does not disclose the affected cryptographic operation or its input-dependent computation. Exploitation requires local access and a high-complexity timing observation; the published impact excludes availability.

The record

CVE
CVE-2020-35164
Published
Jul 11, 2022
Updated
Sep 16, 2024
Vendor
Dell
Product
BSAFE Crypto-C Micro Edition
Classifications
CWE-385, CAPEC-462
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=unspecified <4.1.5 and 4.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Dell · BSAFE Crypto-C Micro Editionversion=unspecified <4.1.5 and 4.6

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
6.7DellCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-385Covert Timing Channel
CAPEC-462Cross-Domain Search Timing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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