CVE-2020-37011
CVE-2020-37011 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-787.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 8.4
- EPSS exploit prediction: 0% (33rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2020-30906
- Weakness: CWE-787
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-37011?
- 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.
- How severe is CVE-2020-37011?
- CVE-2020-37011 has a CVSS 3.x base score of 7.5, rated high 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 high.
- Is CVE-2020-37011 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2020-37011?
- 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.
- Does CVE-2020-37011 have an EU (EUVD) identifier?
- Yes. CVE-2020-37011 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30906.
- When was CVE-2020-37011 published?
- CVE-2020-37011 was published on 2026-01-29 and last updated on 2026-06-17.
References
- https://apps.gnome.org/FontViewer/
- https://help.gnome.org/
- https://www.exploit-db.com/exploits/48803
- https://www.vulncheck.com/advisories/gnome-fonts-viewer-heap-corruption
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