CVE-2018-15518
CVE-2018-15518 is a high-severity vulnerability in Qt with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-415.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 3% (83rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-415
- Affected product: Qt
- Published:
- Last modified:
Description
QXmlStream in Qt 5.x before 5.11.3 has a double-free or corruption during parsing of a specially crafted illegal XML document.
Frequently asked questions
- What is CVE-2018-15518?
- QXmlStream in Qt 5.x before 5.11.3 has a double-free or corruption during parsing of a specially crafted illegal XML document.
- How severe is CVE-2018-15518?
- CVE-2018-15518 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-15518 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-15518?
- CVE-2018-15518 primarily affects Qt. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-15518?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-15518 published?
- CVE-2018-15518 was published on 2018-12-26 and last updated on 2026-06-17.
References
- http://lists.opensuse.org/opensuse-security-announce/2018-12/msg00066.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00071.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00073.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00090.html
- https://access.redhat.com/errata/RHSA-2019:2135
- https://access.redhat.com/errata/RHSA-2019:3390
- https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/
- https://codereview.qt-project.org/#/c/236691/
- https://lists.debian.org/debian-lts-announce/2019/01/msg00004.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00014.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00023.html
- https://usn.ubuntu.com/4003-1/
- https://www.debian.org/security/2019/dsa-4374
Affected products (4)
- cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
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