CVE-2026-33103: Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose info

Routine

MEDIUM 5.5WATCHLISTUPGRADE

CVE-2026-33103 is a medium-severity flaw (CVSS 5.5) affecting dynamics 365. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information locally.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-04-14
Last modified	2026-07-24

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-14 18:17 UTCPublished CVE record published
2026-07-24 23:10 UTCUpdated Record last modified

microsoft dynamics 365 UPGRADE

Affected: >= 9.0 and < 9.1.44.15

Fixed in: 9.1.44.15

Safe to downgrade to: a release before 9.0

1. Check installed version

apt-cache policy dynamics-365 || rpm -q dynamics-365 || dynamics-365 --version

2. UPGRADE to 9.1.44.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dynamics-365

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dynamics-365

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 9.0 (Debian / Ubuntu)

apt-cache madison dynamics-365 sudo apt install dynamics-365=<VERSION_BEFORE_9.0> sudo apt-mark hold dynamics-365

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

dnf --showduplicates list dynamics-365 sudo dnf downgrade dynamics-365-<VERSION_BEFORE_9.0> sudo dnf versionlock add dynamics-365

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-2026-33103?

dynamics 365: upgrade to 9.1.44.15. Exact commands for each OS are on this page.

Is CVE-2026-33103 being exploited?

CVE-2026-33103 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-2026-33103 affect?

CVE-2026-33103 affects dynamics 365. Severity is medium (CVSS 5.5). Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information locally.

How urgent is CVE-2026-33103?

Priority 27/100. On your watchlist

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References

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