Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in…
Priority LOW 38CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 fixed, 4 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03002 87th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 2 fixed, 4 without a fix
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 · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:* | 5.0.0 to before 5.15.6; 6.0.0 – 6.1.2 | Vulnerable | qt |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 35 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* | 36 | Vulnerable | Fedoraproject |
- cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:* Versions 5.0.0 to before 5.15.6; 6.0.0 – 6.1.2 Vulnerable ·qt
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* Versions 36 Vulnerable ·Fedoraproject
Remediation
Red Hat 1 advisory
- RHSA-2022:1796 Released 2022-05-10 · Red Hat rating Moderateqt5-qtbase security update
- Red Hat Enterprise Linux AppStream (v. 8) qt5-qtbase-5.15.2-4.el8, qt5-qtbase-common-5.15.2-4.el8, qt5-qtbase-devel-5.15.2-4.el8 +6
- Red Hat Enterprise Linux CRB (v. 8) qt5-qtbase-static-5.15.2-4.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2022:1796 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2022:1796 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38593
- 2026-10-03 Alias added: GHSA-qfcf-2jfw-4cm8
- 2026-11-02 CISA SSVC decision points changed
References
Patch 4
Advisory 5
Sources
- CVE-2021-38593 · CVE Program
- CVE-2021-38593 · NVD
- FIRST EPSS
- GHSA-qfcf-2jfw-4cm8 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-38593 · 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