CVE-2026-11803: A maliciously crafted PDF file, when parsed through Autodesk Revit, can force an Out-of-Bounds Read vulnerabil

Routine

HIGH 7.8UPGRADE

CVE-2026-11803 is a high-severity flaw (CVSS 7.8) affecting revit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A maliciously crafted PDF file, when parsed through Autodesk Revit, can force an Out-of-Bounds Read vulnerability. A malicious actor can leverage this vulnerability to cause a crash, read sensitive data, or execute arbitrary code in the context of the current process.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-125
Published	2026-08-06
Last modified	2026-10-23

Publisher (CNA): Autodesk · Vendor: autodesk

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-06 22:16 UTCPublished CVE record published
2026-10-23 21:10 UTCUpdated Record last modified

autodesk revit UPGRADE

Affected: >= 2024 and < 2024.3.6 · >= 2025 and < 2025.4.6 · >= 2026 and < 2026.5 · >= 2027 and < 2027.2

Fixed in: 2024.3.6, 2025.4.6, 2026.5, 2027.2

Safe to downgrade to: a release before 2024

1. Check installed version

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

2. UPGRADE to 2024.3.6 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade revit

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 2024 (Debian / Ubuntu)

apt-cache madison revit sudo apt install revit=<VERSION_BEFORE_2024> sudo apt-mark hold revit

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

dnf --showduplicates list revit sudo dnf downgrade revit-<VERSION_BEFORE_2024> sudo dnf versionlock add revit

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-2026-11803?

revit: upgrade to 2024.3.6, 2025.4.6, 2026.5, 2027.2. Exact commands for each OS are on this page.

Is CVE-2026-11803 being exploited?

CVE-2026-11803 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-2026-11803 affect?

CVE-2026-11803 affects revit. Severity is high (CVSS 7.8). A maliciously crafted PDF file, when parsed through Autodesk Revit, can force an Out-of-Bounds Read vulnerability. A malicious actor can leverage this vulnerability to cause a crash, read sensitive data, or execute arbitrary code in the con

How urgent is CVE-2026-11803?

Priority 29/100. High severity

Related CVEs

CVE-2026-8325 HIGH 7.8 UPGRADE A maliciously crafted PDF file, when parsed through Autodesk Revit, can force an Out-of-Bounds Write vulnerabi
CVE-2026-1289 HIGH 7.8 UPGRADE A maliciously crafted PDF file, when parsed through Autodesk Revit, can force a Use-After-Free vulnerability

References

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