uiutil.c in FontForge through 20170731 does not validate strings before launching the…
Priority MEDIUM 42CWE-74Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
uiutil.c in FontForge through 20170731 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL, a different vulnerability than CVE-2017-17534.
Why it matters now
EPSS 0.0185 79th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-17521
- 2026-10-03 Alias added: GHSA-8vv4-vqx2-f85v
References
More Fontforge vulnerabilities
- TI-2025-32277 FontForge v20230101 was discovered to contain a memory leak via the utf7toutf8_copy function at /fontforge/sfd.c. CVSS 3.1MEDIUM 6.5
- TI-2025-32275 FontForge v20230101 was discovered to contain a memory leak via the component DlgCreate8. CVSS 3.1MEDIUM 6.5
- TI-2019-11856 FontForge 20190813 through 20190820 has a buffer overflow in PrefsUI_LoadPrefs in prefs.c. CVSS 3.0CRITICAL 9.8
- TI-2020-04474 FontForge 20190801 has a heap-based buffer overflow in the Type2NotDefSplines() function in splinesave.c. CVSS 3.1HIGH 8.8
- TI-2020-04441 FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c. CVSS 3.1HIGH 8.8
- TI-2025-13955 Use after free in FontForge CVSS 3.0HIGH 8.8
Sources
- CVE-2017-17521 · CVE Program
- CVE-2017-17521 · NVD
- FIRST EPSS
- GHSA-8vv4-vqx2-f85v · GitHub Advisory Database · CC BY 4.0
- CVE-2017-17521 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences