CVE-2025-50951 Denial of service in n/a
A memory leak in FontForge allows attackers to cause a denial of service by exhausting system memory.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-50951?
CVE-2025-50951 is a medium-severity denial of service vulnerability in n/a, published on 23 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
FontForge v20230101 was discovered to contain a memory leak via the utf7toutf8_copy function at /fontforge/sfd.c.
Weakness: CWE-401
Which versions are affected by CVE-2025-50951?
It affects 1 product.
Products include Fontforge Fontforge.
How do I fix CVE-2025-50951?
No fix has been published for CVE-2025-50951 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-50951 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-50951 exists.
Other vulnerabilities in n/a
- CVE-2019-15785 Memory corruption in n/a
- CVE-2025-15269 FontForge SFD File Parsing Use-After-Free Remote Code Execution Vulnerability
- CVE-2025-15270 FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability
- CVE-2025-15271 FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability
- CVE-2025-15272 FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Sources
Also known as DEBIAN-CVE-2025-50951, GHSA-x45p-m5jm-48hc, UBUNTU-CVE-2025-50951.