An issue was discovered in HTTP2 in Qt before 5.15.18, 6.x before 6.2.13, 6.3.x through…
Priority LOW 38CWE-367Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
An issue was discovered in HTTP2 in Qt before 5.15.18, 6.x before 6.2.13, 6.3.x through 6.5.x before 6.5.7, and 6.6.x through 6.7.x before 6.7.3. Code to make security-relevant decisions about an established connection may execute too early, because the encrypted() signal has not yet been emitted and processed..
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0049 42nd percentileScored 2026-11-07
Fix Fixed Red Hat: 9 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:* | before 5.15.18; 6.0.0 to before 6.2.13; 6.3.0 to before 6.5.7; 6.6.0 to before 6.7.3 | Vulnerable | qt |
- cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:* Versions before 5.15.18; 6.0.0 to before 6.2.13; 6.3.0 to before 6.5.7; 6.6.0 to before 6.7.3 Vulnerable ·qt
Remediation
Red Hat 9 advisories
- RHSA-2024:4645 Released 2024-07-19 · Red Hat rating Importantqt5-qtbase security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) qt5-qtbase-5.15.2-30.el9_0, qt5-qtbase-common-5.15.2-30.el9_0, qt5-qtbase-devel-5.15.2-30.el9_0 +6
- RHSA-2024:4646 Released 2024-07-19 · Red Hat rating Importantqt5-qtbase security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) qt5-qtbase-5.12.5-5.el8_2, qt5-qtbase-common-5.12.5-5.el8_2, qt5-qtbase-devel-5.12.5-5.el8_2 +6
- RHSA-2024:4639 Released 2024-07-18 · Red Hat rating Importantqt5-qtbase security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) qt5-qtbase-static-5.15.3-2.el8_8
- Red Hat Enterprise Linux AppStream EUS (v.8.8) qt5-qtbase-5.15.3-2.el8_8, qt5-qtbase-common-5.15.3-2.el8_8, qt5-qtbase-devel-5.15.3-2.el8_8 +6
Show 6 more Red Hat advisories
- RHSA-2024:4644 Released 2024-07-18 · Red Hat rating Importantqt5-qtbase security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) qt5-qtbase-5.15.2-5.el8_6, qt5-qtbase-common-5.15.2-5.el8_6, qt5-qtbase-devel-5.15.2-5.el8_6 +6
- Red Hat Enterprise Linux AppStream E4S (v.8.6) qt5-qtbase-5.15.2-5.el8_6, qt5-qtbase-common-5.15.2-5.el8_6, qt5-qtbase-devel-5.15.2-5.el8_6 +6
- Red Hat Enterprise Linux AppStream TUS (v.8.6) qt5-qtbase-5.15.2-5.el8_6, qt5-qtbase-common-5.15.2-5.el8_6, qt5-qtbase-devel-5.15.2-5.el8_6 +6
- RHSA-2024:4638 Released 2024-07-18 · Red Hat rating Importantqt5-qtbase security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) qt5-qtbase-static-5.15.3-2.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) qt5-qtbase-5.15.3-2.el9_2, qt5-qtbase-common-5.15.3-2.el9_2, qt5-qtbase-devel-5.15.3-2.el9_2 +6
- RHSA-2024:4647 Released 2024-07-18 · Red Hat rating Importantqt5-qtbase security update
- Red Hat Enterprise Linux Server (v. 7 ELS) qt5-qtbase-5.9.7-6.el7_9, qt5-qtbase-5.9.7-6.el7_9.ppc, qt5-qtbase-common-5.9.7-6.el7_9 +11
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) qt5-qtbase-doc-5.9.7-6.el7_9, qt5-qtbase-examples-5.9.7-6.el7_9, qt5-qtbase-static-5.9.7-6.el7_9 +1
- RHSA-2024:4623 Released 2024-07-18 · Red Hat rating Importantqt5-qtbase security update
- Red Hat Enterprise Linux AppStream (v. 9) qt5-qtbase-5.15.9-10.el9_4, qt5-qtbase-common-5.15.9-10.el9_4, qt5-qtbase-devel-5.15.9-10.el9_4 +6
- Red Hat Enterprise Linux CRB (v. 9) qt5-qtbase-static-5.15.9-10.el9_4
- RHSA-2024:4621 Released 2024-07-18 · Red Hat rating Importantqt5-qtbase security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) qt5-qtbase-5.12.5-9.el8_4, qt5-qtbase-common-5.12.5-9.el8_4, qt5-qtbase-devel-5.12.5-9.el8_4 +6
- Red Hat Enterprise Linux AppStream E4S (v.8.4) qt5-qtbase-5.12.5-9.el8_4, qt5-qtbase-common-5.12.5-9.el8_4, qt5-qtbase-devel-5.12.5-9.el8_4 +6
- Red Hat Enterprise Linux AppStream TUS (v.8.4) qt5-qtbase-5.12.5-9.el8_4, qt5-qtbase-common-5.12.5-9.el8_4, qt5-qtbase-devel-5.12.5-9.el8_4 +6
- RHSA-2024:4617 Released 2024-07-18 · Red Hat rating Importantqt5-qtbase security update
- Red Hat Enterprise Linux AppStream (v. 8) qt5-qtbase-5.15.3-8.el8_10, qt5-qtbase-common-5.15.3-8.el8_10, qt5-qtbase-devel-5.15.3-8.el8_10 +6
- Red Hat Enterprise Linux CRB (v. 8) qt5-qtbase-static-5.15.3-8.el8_10
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:4639 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:4638 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:4617 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:4623 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2024:4646 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2024:4621 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2024:4644 |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | RHSA-2024:4621 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2024:4644 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2024:4645 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2024:4639 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:4638 |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | RHSA-2024:4621 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2024:4644 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:4617 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:4623 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2024:4647 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2024:4647 |
Not affected: 1 product
- Red Hat Enterprise Linux 10
Timeline
- 2026-10-02 Threatist record created from CVE-2024-39936
- 2026-10-03 Alias added: GHSA-8gfm-8wff-rjvj
References
More Qt vulnerabilities
- TI-2024-23902 QAbstractOAuth in Qt Network Authorization in Qt before 5.15.17, 6.x before 6.2.13, 6.3.x… CVSS 3.1CRITICAL 9.8
- TI-2022-21359 Heap-based buffer overflow in Qt CVSS 3.1HIGH 8.8
- TI-2022-19524 Integer overflow in Qt CVSS 3.1HIGH 8.8
- TI-2023-18997 In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can… CVSS 3.1HIGH 7.5
- TI-2021-09305 Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0… CVSS 3.1MEDIUM 5.5
- TI-2023-28356 An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2024-39936 · CVE Program
- CVE-2024-39936 · NVD
- FIRST EPSS
- GHSA-8gfm-8wff-rjvj · GitHub Advisory Database · CC BY 4.0
- CVE-2024-39936 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences