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CVE-2023-51714

Qt integer overflow

9.8 CRITICALEPSS 0.98%
  1. Published24 Dec 2023

Description

An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x before 6.6.2. network/access/http2/hpacktable.cpp has an incorrect HPack integer overflow check.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Qt≥ 5.7 < 5.15.17 · ≥ 6.0.0 < 6.2.11 · ≥ 6.3.0 < 6.5.4 · ≥ 6.6.0 < 6.6.2
Debian Linux10.0

Remediation

Fixed in
Qt≥ 5.15.17

References

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Frequently asked

Is CVE-2023-51714 being actively exploited?

CVE-2023-51714 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.98%.

How severe is CVE-2023-51714?

CVE-2023-51714 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.98% probability of exploitation.

Which products are affected by CVE-2023-51714?

Affected products include Qt, Debian Linux.

How do I fix CVE-2023-51714?

Upgrade affected software to a fixed version, for example Qt 5.15.17 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-51714 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.