CVE-2020-17507

CVE-2020-17507 is a medium-severity vulnerability in Qt with a CVSS 3.x base score of 5.3. 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-125.

Key facts

• Severity: Medium (CVSS 3.x base score 5.3)
• CVSS v2: 5.0
• EPSS exploit prediction: 4% (89th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-125
• Affected product: Qt
• Published: 2020-08-12
• Last modified: 2026-06-17

Description

An issue was discovered in Qt through 5.12.9, and 5.13.x through 5.15.x before 5.15.1. read_xbm_body in gui/image/qxbmhandler.cpp has a buffer over-read.

Frequently asked questions

What is CVE-2020-17507?

An issue was discovered in Qt through 5.12.9, and 5.13.x through 5.15.x before 5.15.1. read_xbm_body in gui/image/qxbmhandler.cpp has a buffer over-read.

How severe is CVE-2020-17507?

CVE-2020-17507 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2020-17507 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-17507?

CVE-2020-17507 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-2020-17507?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-17507 published?

CVE-2020-17507 was published on 2020-08-12 and last updated on 2026-06-17.

References

• 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
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00104.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00105.html
• https://codereview.qt-project.org/c/qt/qtbase/+/308436
• https://codereview.qt-project.org/c/qt/qtbase/+/308495
• https://codereview.qt-project.org/c/qt/qtbase/+/308496
• https://lists.debian.org/debian-lts-announce/2020/09/msg00023.html
• https://lists.debian.org/debian-lts-announce/2020/09/msg00024.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/426FCC6JNK4JUEX5QHJQDYQ6MUVQ3E6P/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NBPZVZNEYXGATTXM4WOE7OQ55VAKPVD6/
• https://security.gentoo.org/glsa/202009-04

Affected products (4)

• cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

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