HarfBuzz before 1.0.4 allows remote attackers to cause a denial of service (invalid read…
Priority LOW 32CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
HarfBuzz before 1.0.4 allows remote attackers to cause a denial of service (invalid read of two bytes and application crash) because of GPOS and GSUB table mishandling, related to hb-ot-layout-gpos-table.hh, hb-ot-layout-gsub-table.hh, and hb-ot-layout-gsubgpos-private.hh.
Why it matters now
EPSS 0.01555 75th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
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
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:harfbuzz_project:harfbuzz:*:*:*:*:*:*:*:* | before 1.0.4 | Vulnerable | Harfbuzz Project |
- cpe:2.3:a:harfbuzz_project:harfbuzz:*:*:*:*:*:*:*:* Versions before 1.0.4 Vulnerable ·Harfbuzz Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2015-9274
- 2026-10-03 Alias added: GHSA-95rc-6f28-2jcq
References
More Harfbuzz Project Harfbuzz vulnerabilities
- TI-2024-37616 HarfBuzz heap-buffer-overflow on hb_cairo_glyphs_from_buffer CVSS 4.0CRITICAL 9.3
- TI-2023-10653 hb-ot-layout-gsubgpos.hh in HarfBuzz through 6.0.0 allows attackers to trigger O(n^2)… CVSS 3.1HIGH 7.5
- TI-2015-07360 hb-ot-layout-gpos-table.hh in HarfBuzz before 1.0.5 allows remote attackers to cause a… CVSS 3.0HIGH 7.6
- TI-2016-01883 Multiple unspecified vulnerabilities in HarfBuzz before 1.0.6, as used in Google Chrome… CVSS 3.0HIGH 7.6
- TI-2021-20935 HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from… CVSS 3.1MEDIUM 6.5
- TI-2026-18220 Null Pointer Dereference in SubtableUnicodesCache::create leading to DoS CVSS 3.1MEDIUM 5.3
Sources
- CVE-2015-9274 · CVE Program
- CVE-2015-9274 · NVD
- FIRST EPSS
- GHSA-95rc-6f28-2jcq · GitHub Advisory Database · CC BY 4.0
- CVE-2015-9274 · Red Hat security data · CC BY 4.0
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