SB2026010831 - Multiple vulnerabilities in FontForge
Published: January 8, 2026 Updated: January 8, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2025-15278)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the parsing of pixels. A remote attacker can trick a victim to open a specially crafted XBM file, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Heap-based buffer overflow (CVE-ID: CVE-2025-15277)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the parsing of scanlines. A remote attacker can trick a victim to open a specially crafted SGI file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Heap-based buffer overflow (CVE-ID: CVE-2025-15279)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the parsing of pixels. A remote attacker can trick a victim to open a specially crafted BMP file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Heap-based buffer overflow (CVE-ID: CVE-2025-15272)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error. A remote attacker can trick a victim to open a specially crafted SFD file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Improper Validation of Array Index (CVE-ID: CVE-2025-15271)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to improper array index validation. A remote attacker can trick a victim to open a specially crafted SFD file and execute arbitrary code on the target system.
6) Use-after-free (CVE-ID: CVE-2025-15269)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error. A remote attacker can trick a victim to open a specially crafted SFD file and execute arbitrary code on the target system.
7) Deserialization of Untrusted Data (CVE-ID: CVE-2025-15276)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can trick a victim to open a specially crafted SFD file and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
8) Heap-based buffer overflow (CVE-ID: CVE-2025-15274)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error. A remote attacker can trick a victim to open a specially crafted SFD file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
9) Use-after-free (CVE-ID: CVE-2025-15280)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error. A remote attacker can trick a victim to open a specially crafted SFD file and execute arbitrary code on the target system.
10) Improper Validation of Array Index (CVE-ID: CVE-2025-15270)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to improper array index validation. A remote attacker can trick a victim to open a specially crafted SFD file and execute arbitrary code on the target system.
11) Stack-based buffer overflow (CVE-ID: CVE-2025-15273)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error. A remote unauthenticated attacker can trick a victim to open a specially crafted PFB file, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
12) Heap-based buffer overflow (CVE-ID: CVE-2025-15275)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error. A remote attacker can trick a victim to open a specially crafted SFD file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.
References
- https://www.zerodayinitiative.com/advisories/ZDI-25-1185/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1186/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1184/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1192/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1193/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1195/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1187/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1190/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1188/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1194/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1191/
- https://www.zerodayinitiative.com/advisories/ZDI-25-1189/