CVE-2020-37011 Gnome Fonts Viewer 3.34.0 Heap Corruption
Attackers can cause memory exhaustion and potential code execution in GNOME Fonts Viewer by providing a maliciously crafted TTF font file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-37011?
CVE-2020-37011 is a high-severity memory corruption vulnerability in GNOME Fonts Viewer, published on 29 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Gnome Fonts Viewer 3.34.0 contains a heap corruption vulnerability that allows attackers to trigger an out-of-bounds write by crafting a malicious TTF font file. Attackers can generate a specially crafted TTF file with an oversized pattern to exhaust memory through repeated malloc() calls and potentially crash the gnome-font-viewer process.
Weakness: CWE-787
Which versions are affected by CVE-2020-37011?
How do I fix CVE-2020-37011?
No fix has been published for CVE-2020-37011 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-37011 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37011 exists.
Sources
Also known as GHSA-v6ph-6g9p-25rc, UBUNTU-CVE-2020-37011.