CVE-2021-21575: Dell BSAFE Micro Edition Suite, versions before 4.5.2, contain an Observable Timing Discrepancy Vulnerability

Q: How do I fix CVE-2021-21575?

bsafe micro-edition-suite: upgrade to 4.5.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-21575 being exploited?

CVE-2021-21575 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-21575 affect?

CVE-2021-21575 affects bsafe micro-edition-suite. Severity is medium (CVSS 5.9). Dell BSAFE Micro Edition Suite, versions before 4.5.2, contain an Observable Timing Discrepancy Vulnerability.

Q: How urgent is CVE-2021-21575?

Priority 37/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.9REMOTEUPGRADE

CVE-2021-21575 is a medium-severity flaw (CVSS 5.9) affecting bsafe micro-edition-suite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dell BSAFE Micro Edition Suite, versions before 4.5.2, contain an Observable Timing Discrepancy Vulnerability.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-208, CWE-203
Published	2024-02-02
Last modified	2026-06-17

Publisher (CNA): Dell · Vendor: dell

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-02 16:15 UTCPublished CVE record published
2026-06-17 03:35 UTCUpdated Record last modified

dell bsafe micro-edition-suite UPGRADE

Affected: < 4.5.2

Fixed in: 4.5.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy bsafe-micro-edition-suite || rpm -q bsafe-micro-edition-suite || bsafe-micro-edition-suite --version

2. UPGRADE to 4.5.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bsafe-micro-edition-suite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bsafe-micro-edition-suite

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-21575?

bsafe micro-edition-suite: upgrade to 4.5.2. Exact commands for each OS are on this page.

Is CVE-2021-21575 being exploited?

CVE-2021-21575 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-21575 affect?

CVE-2021-21575 affects bsafe micro-edition-suite. Severity is medium (CVSS 5.9). Dell BSAFE Micro Edition Suite, versions before 4.5.2, contain an Observable Timing Discrepancy Vulnerability.

How urgent is CVE-2021-21575?

Priority 37/100. Remotely exploitable, no login, no user action

Software pages

Dell vulnerabilities

Related CVEs

CVE-2024-48014 HIGH 7.5 UPGRADE Dell BSAFE Micro Edition Suite, versions prior to 5.0.2.3 contain an Out-of-bounds Write vulnerability
CVE-2023-28074 MEDIUM 6.2 UPGRADE UPGRADE Dell BSAFE Crypto-C Micro Edition, version 4.1.5, and Dell BSAFE Micro Edition Suite, versions 4.0 through 4.6
CVE-2020-35165 MEDIUM 5.1 UPGRADE UPGRADE Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, and Dell BSAFE Micro Edition Suite, versions before
CVE-2020-29504 HIGH 7.4 UPGRADE UPGRADE Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, and Dell BSAFE Micro Edition Suite, versions before

References

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