Use After Free in Qt
CVE-2020-12267
setMarkdown in Qt before 5.14.2 has a use-after-free related to QTextMarkdownImporter::insertBlock.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.024 (83.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.024 · change: +0.001
Affected products
- Qt — versions 5.14.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Third Party Advisory, Issue Tracking)
- codereview.qt-project.org/c/qt/qtbase/+/291706 (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202007-38 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-12267?
- CVE-2020-12267 is a critical-severity vulnerability in Qt, classified under Use After Free. CVSS score: 9.8/10. Published 2020-04-27.
- How severe is CVE-2020-12267?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-12267 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.