CVE-2025-15271
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
8.8
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
- Record
CVE-2025-15271- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-129
- Updated
- 2026-11-02
EUVDEUVD-2025-205896
8.8
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
- Record
EUVD-2025-205896- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-gwg7-r3vr-jqwf
8.8
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability...
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
- Record
GHSA-gwg7-r3vr-jqwf- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-129
- Updated
- 2026-11-02
NVD
8.8
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
- Record
CVE-2025-15271- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-129
- Updated
- 2026-11-02
OSV
8.8
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
- Record
CVE-2025-15271- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-15271
8.8
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
- Record
DEBIAN-CVE-2025-15271- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-15271
8.8
FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28562.
- Record
UBUNTU-CVE-2025-15271- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
fontforgeDebian:12 |
All versions, plus listed versions 1:20230101~dfsg-11:20230101~dfsg-1.11:20230101~dfsg-1.1~deb12u11:20230101~dfsg-21:20230101~dfsg-3 Show 8 moreShow less1:20230101~dfsg-41:20230101~dfsg-51:20230101~dfsg-61:20230101~dfsg-71:20230101~dfsg-81:20230101~dfsg-91:20251009+git20260808~dfsg-11:20251009+git20260808~dfsg-2 |
None known |
fontforgeDebian:13 |
All versions, plus listed versions 1:20230101~dfsg-41:20230101~dfsg-51:20230101~dfsg-61:20230101~dfsg-71:20230101~dfsg-81:20230101~dfsg-91:20251009+git20260808~dfsg-11:20251009+git20260808~dfsg-2 |
None known |
fontforgeDebian:14 |
All versions, plus listed versions 1:20230101~dfsg-41:20230101~dfsg-51:20230101~dfsg-61:20230101~dfsg-71:20230101~dfsg-81:20230101~dfsg-91:20251009+git20260808~dfsg-11:20251009+git20260808~dfsg-2 |
None known |
fontforgeUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 20120731.b-520120731.b-5ubuntu120120731.b-7.120120731.b-7.1ubuntu0.120120731.b-7.1ubuntu0.1+esm1 |
None known |
fontforgeUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 1:20161005~dfsg-4+deb9u1ubuntu11:20170731~dfsg-11:20170731~dfsg-1ubuntu0.1~esm1 |
None known |
fontforgeUbuntu:20.04:LTS |
All versions, plus listed versions 1:20170731~dfsg-1build11:20170731~dfsg-21:20190801~dfsg-21:20190801~dfsg-2ubuntu11:20190801~dfsg-41:20190801~dfsg-4ubuntu0.1 |
None known |
fontforgeUbuntu:22.04:LTS |
All versions, plus listed versions 1:20201107~dfsg-41:20201107~dfsg-4build11:20201107~dfsg-4+deb11u1build0.22.04.1 |
None known |
fontforgeUbuntu:24.04:LTS |
All versions, plus listed versions 1:20230101~dfsg-1build11:20230101~dfsg-1build21:20230101~dfsg-1.11:20230101~dfsg-1.1build1 |
None known |
fontforgeUbuntu:25.10 |
All versions, plus listed versions 1:20230101~dfsg-4build11:20230101~dfsg-4build21:20230101~dfsg-71:20230101~dfsg-8 |
None known |
fontforgeUbuntu:26.10 |
All versions, plus listed versions 1:20230101~dfsg-8build11:20230101~dfsg-91:20251009+git20260808~dfsg-2 |
None known |
fontforgeUbuntu:26.04:LTS |
All versions, plus listed versions 1:20230101~dfsg-81:20230101~dfsg-8build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-15271 is a high vulnerability (CVSS 8.8) in Fontforge, published December 31, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.61%, the 49th percentile. No source names a fixed version.