CVE-2023-36627: A flaw exists in FlashBlade Purity whereby a user with access to an administrative account on a FlashBlade tha

Routine

HIGH 7.7UPGRADE

CVE-2023-36627 is a high-severity flaw (CVSS 7.7) affecting purity. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw exists in FlashBlade Purity whereby a user with access to an administrative account on a FlashBlade that is configured with timezone-dependent snapshot schedules can configure a timezone to prevent the schedule from functioning properly.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Published	2023-10-02
Last modified	2026-06-17

Publisher (CNA): Pure Storage, Inc. · Vendor: purestorage

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

Am I affected?

Timeline

2023-10-02 23:15 UTCPublished CVE record published
2026-06-17 06:06 UTCUpdated Record last modified

purestorage purity UPGRADE

Affected: <= 3.3.7 · >= 4.0.0 and <= 4.0.5 · >= 4.1.0 and <= 4.1.2

Fixed in: newer than 4.1.2

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy purity || rpm -q purity || purity --version

2. UPGRADE to newer than 4.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade purity

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade purity

Note

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

3. If no update is available yet, DOWNGRADE to a release before 4.0.0 (Debian / Ubuntu)

apt-cache madison purity sudo apt install purity=<VERSION_BEFORE_4.0.0> sudo apt-mark hold purity

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list purity sudo dnf downgrade purity-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add purity

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2023-36627?

purity: upgrade to newer than 4.1.2. Exact commands for each OS are on this page.

Is CVE-2023-36627 being exploited?

CVE-2023-36627 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-2023-36627 affect?

CVE-2023-36627 affects purity. Severity is high (CVSS 7.7). A flaw exists in FlashBlade Purity whereby a user with access to an administrative account on a FlashBlade that is configured with timezone-dependent snapshot schedules can configure a timezone to prevent the schedule from functioning prope

How urgent is CVE-2023-36627?

Priority 39/100. High severity

Related CVEs

CVE-2023-31042 HIGH 7.7 UPGRADE A flaw exists in FlashBlade Purity whereby an authenticated user with access to FlashBlade’s object store prot
CVE-2023-28372 MEDIUM 6.5 UPGRADE A flaw exists in FlashBlade Purity (OE) Version 4.1.0 whereby a user with privileges to extend an object’s ret
CVE-2017-7352 MEDIUM 5.4 DOWNGRADE Stored Cross-site scripting (XSS) vulnerability in Pure Storage Purity 4.7.5 allows remote authenticated users
CVE-2002-1124 HIGH 7.2 DOWNGRADE Multiple buffer overflows in purity 1-16 allow local users to gain privileges and modify high scores tables.

References

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