CVE-2020-37011

HIGH

Gnome Fonts Viewer 3.34.0 - Memory Corruption

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-37011. PoCs published by Cody Winkler.

AI-analyzed exploit summary This exploit generates a malformed TTF file to trigger a heap corruption vulnerability in Gnome Fonts Viewer 3.34.0, leading to a denial-of-service condition via an infinite malloc loop.

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.

Exploits (1)

exploitdb WORKING POC
by Cody Winkler · pythonlocallinux
https://www.exploit-db.com/exploits/48803

This exploit generates a malformed TTF file to trigger a heap corruption vulnerability in Gnome Fonts Viewer 3.34.0, leading to a denial-of-service condition via an infinite malloc loop.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Racy
Target: Gnome Fonts Viewer 3.34.0
No auth needed
Prerequisites: Gnome Fonts Viewer 3.34.0 installed · Ability to execute the script on the target system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/48803
Various Sources product
https://help.gnome.org/
Various Sources product
https://apps.gnome.org/FontViewer/

Scores

CVSS v3 7.5
EPSS 0.0041
EPSS Percentile 32.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (1)
GNOME/Fonts Viewer 3.34.0
Published Jan 29, 2026
Tracked Since Feb 18, 2026