Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package qtwebengine-opensource-src (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2510-QTWEBENGINEOPENSOURCESRC-15025589
- published17 Jan 2026
- disclosed5 Jan 2021
Introduced: 5 Jan 2021
CVE-2020-27845 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:25.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qtwebengine-opensource-src package and not the qtwebengine-opensource-src package as distributed by Ubuntu.
There's a flaw in src/lib/openjp2/pi.c of openjpeg in versions prior to 2.4.0. If an attacker is able to provide untrusted input to openjpeg's conversion/encoding functionality, they could cause an out-of-bounds read. The highest impact of this flaw is to application availability.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2020-27845
- https://www.debian.org/security/2021/dsa-4882
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
- https://security.gentoo.org/glsa/202101-29
- https://bugzilla.redhat.com/show_bug.cgi?id=1907523
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
- https://www.oracle.com//security-alerts/cpujul2021.html