CVE-2025-20001: An out-of-bounds read vulnerability exists in High-Logic FontCreator 15.0.0.3015

Routine

MEDIUM 6.5DOWNGRADE

CVE-2025-20001 is a medium-severity flaw (CVSS 6.5) affecting fontcreator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An out-of-bounds read vulnerability exists in High-Logic FontCreator 15.0.0.3015. A specially crafted font file can trigger this vulnerability which can lead to disclosure of sensitive information. An attacker needs to trick the user into opening the malicious file to trigger this vulnerability.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-125
Published	2025-06-02
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: high-logic

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-02 15:15 UTCPublished CVE record published
2026-06-17 08:40 UTCUpdated Record last modified

high-logic fontcreator DOWNGRADE

Affected: 15.0.0.3015

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.0.0.3015

1. Check installed version

apt-cache policy fontcreator || rpm -q fontcreator || fontcreator --version

2. No fixed release: DOWNGRADE to a release before 15.0.0.3015 (Debian / Ubuntu)

apt-cache madison fontcreator sudo apt install fontcreator=<VERSION_BEFORE_15.0.0.3015> sudo apt-mark hold fontcreator

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fontcreator sudo dnf downgrade fontcreator-<VERSION_BEFORE_15.0.0.3015> sudo dnf versionlock add fontcreator

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-20001?

fontcreator: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-20001 being exploited?

CVE-2025-20001 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-20001 affect?

CVE-2025-20001 affects fontcreator. Severity is medium (CVSS 6.5). An out-of-bounds read vulnerability exists in High-Logic FontCreator 15.0.0.3015. A specially crafted font file can trigger this vulnerability which can lead to disclosure of sensitive information. An attacker needs to trick the user into o

How urgent is CVE-2025-20001?

Priority 39/100. Public exploit reference

References

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