CVE-2023-24607: Qt before 6.4.3 allows a denial of service via a crafted string when the SQL ODBC driver plugin is used and th

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HIGH 7.5REMOTEUPGRADE

CVE-2023-24607 is a high-severity flaw (CVSS 7.5) affecting qt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Qt before 6.4.3 allows a denial of service via a crafted string when the SQL ODBC driver plugin is used and the size of SQLTCHAR is 4. The affected versions are 5.x before 5.15.13, 6.x before 6.2.8, and 6.3.x before 6.4.3.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Published	2023-04-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: qt

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

Am I affected?

Timeline

2023-04-15 01:15 UTCPublished CVE record published
2026-06-17 05:39 UTCUpdated Record last modified

qt qt UPGRADE

Affected: >= 5.0.0 and < 5.15.13 · >= 6.0.0 and < 6.2.8 · >= 6.3.0 and < 6.4.3

Fixed in: 5.15.13, 6.2.8, 6.4.3

Safe to downgrade to: a release before 5.0.0

1. Check installed version

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

2. UPGRADE to 5.15.13 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade qt

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 5.0.0 (Debian / Ubuntu)

apt-cache madison qt sudo apt install qt=<VERSION_BEFORE_5.0.0> sudo apt-mark hold qt

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

dnf --showduplicates list qt sudo dnf downgrade qt-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add qt

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-2023-24607?

qt: upgrade to 5.15.13, 6.2.8, 6.4.3. Exact commands for each OS are on this page.

Is CVE-2023-24607 being exploited?

CVE-2023-24607 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-2023-24607 affect?

CVE-2023-24607 affects qt. Severity is high (CVSS 7.5). Qt before 6.4.3 allows a denial of service via a crafted string when the SQL ODBC driver plugin is used and the size of SQLTCHAR is 4. The affected versions are 5.x before 5.15.13, 6.x before 6.2.8, and 6.3.x before 6.4.3.

How urgent is CVE-2023-24607?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

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References

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