CVE-2025-69233: Due to multiple time-of-check time-of-use race conditions in the resource count check and increment logic, as

Routine

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2025-69233 is a medium-severity flaw (CVSS 6.5) affecting cloudstack. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Due to multiple time-of-check time-of-use race conditions in the resource count check and increment logic, as well as missing validations, users of the platform are able to exceed the allocation limits configured for their accounts/domains. This can be used by an attacker to degrade the infrastructure's resources and lead to denial of service conditions. Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or late

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-367, CWE-770
Published	2026-05-08
Last modified	2026-10-07

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-08 13:16 UTCPublished CVE record published
2026-10-07 09:10 UTCUpdated Record last modified

apache cloudstack UPGRADE

Affected: >= 4.0.0 and < 4.20.3.0 · >= 4.21.0.0 and < 4.22.0.1

Fixed in: 4.20.3.0, 4.22.0.1

Safe to downgrade to: a release before 4.0.0

1. Check installed version

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

2. UPGRADE to 4.20.3.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cloudstack

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 cloudstack sudo apt install cloudstack=<VERSION_BEFORE_4.0.0> sudo apt-mark hold cloudstack

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

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

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-2025-69233?

cloudstack: upgrade to 4.20.3.0, 4.22.0.1. Exact commands for each OS are on this page.

Is CVE-2025-69233 being exploited?

CVE-2025-69233 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-2025-69233 affect?

CVE-2025-69233 affects cloudstack. Severity is medium (CVSS 6.5). Due to multiple time-of-check time-of-use race conditions in the resource count check and increment logic, as well as missing validations, users of the platform are able to exceed the allocation limits configured for their accounts/domains.

How urgent is CVE-2025-69233?

Priority 37/100. On your watchlist

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References

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