hb-ot-layout-gpos-table.hh in HarfBuzz before 1.0.5 allows remote attackers to cause a denial of service (buffer over-read) or possibly have
hb-ot-layout-gpos-table.hh in HarfBuzz before 1.0.5 allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted data, a different vulnerability than CVE-2016-2052.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Jul 19, 2016
- Updated
- Jun 16, 2026
- EPSS
- 2.6% · 84th percentile
- CWE
- CWE-119
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| harfbuzz project | harfbuzz | cpe:2.3:a:harfbuzz_project:harfbuzz |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- harfbuzz project harfbuzzup to 1.0.4 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | harfbuzz | before 1.2.6-1 | 1.2.6-1 |
| Debian:8 | harfbuzz | before 0.9.35-2+deb8u1 | 0.9.35-2+deb8u1 |
| Red Hat:rhel_extras:6 | chromium-browser | before 0:48.0.2564.82-1.el6 | 0:48.0.2564.82-1.el6 |
| Red Hat:rhel_extras:6 | chromium-browser-debuginfo | before 0:48.0.2564.82-1.el6 | 0:48.0.2564.82-1.el6 |
| SUSE:Linux Enterprise Desktop 12 SP2 | libixion | before 0.12.1-12.1 | 0.12.1-12.1 |
| SUSE:Linux Enterprise Desktop 12 SP2 | libmwaw | before 0.3.11-9.1 | 0.3.11-9.1 |
| SUSE:Linux Enterprise Desktop 12 SP2 | liborcus | before 0.12.1-12.1 | 0.12.1-12.1 |
| SUSE:Linux Enterprise Desktop 12 SP2 | libreoffice | before 5.3.3.2-40.5.9 | 5.3.3.2-40.5.9 |
| SUSE:Linux Enterprise Desktop 12 SP2 | libstaroffice | before 0.0.3-2.1 | 0.0.3-2.1 |
| SUSE:Linux Enterprise Desktop 12 SP2 | libzmf | before 0.0.1-2.1 | 0.0.1-2.1 |
| SUSE:Linux Enterprise Desktop 12 SP2 | myspell-dictionaries | before 20170511-15.1 | 20170511-15.1 |
| SUSE:Linux Enterprise Desktop 12 SP3 | libixion | before 0.12.1-13.2.1 | 0.12.1-13.2.1 |
| SUSE:Linux Enterprise Desktop 12 SP3 | libmwaw | before 0.3.11-7.5.1 | 0.3.11-7.5.1 |
| SUSE:Linux Enterprise Desktop 12 SP3 | liborcus | before 0.12.1-10.5.1 | 0.12.1-10.5.1 |
| SUSE:Linux Enterprise Desktop 12 SP3 | libreoffice | before 5.3.5.2-43.5.4 | 5.3.5.2-43.5.4 |
| SUSE:Linux Enterprise Desktop 12 SP3 | libstaroffice | before 0.0.3-4.1 | 0.0.3-4.1 |
| SUSE:Linux Enterprise Desktop 12 SP3 | libzmf | before 0.0.1-4.1 | 0.0.1-4.1 |
| SUSE:Linux Enterprise Desktop 12 SP3 | myspell-dictionaries | before 20170511-16.2.1 | 20170511-16.2.1 |
Same product
harfbuzz project: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-56732HarfBuzz heap-buffer-overflow on hb_cairo_glyphs_from_buffer37Monitor
- CVE-2023-25193hb-ot-layout-gsubgpos.hh in HarfBuzz through 6.0.0 allows attackers to trigger O(n^2) growth via consecutive marks during the process of loo31Monitor
- CVE-2021-45931HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t<hb_bit_set_invertible_t>::set and hb_s27Monitor
- CVE-2015-9274HarfBuzz before 1.0.4 allows remote attackers to cause a denial of service (invalid read of two bytes and application crash) because of GPOS26Monitor
- CVE-2022-33068An integer overflow in the component hb-ot-shape-fallback.cc of Harfbuzz v4.3.0 allows attackers to cause a Denial of Service (DoS) via unsp22Monitor
- CVE-2026-22693Null Pointer Dereference in SubtableUnicodesCache::create leading to DoS21Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:harfbuzz | 1.2.6-1 · Debian:12 | Package registry (OSV) |
| red hat:chromium-browser | 0:48.0.2564.82-1.el6 · Red Hat:rhel_extras:6 | Package registry (OSV) |
| red hat:chromium-browser-debuginfo | 0:48.0.2564.82-1.el6 · Red Hat:rhel_extras:6 | Package registry (OSV) |
| suse:libixion | 0.12.1-12.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
| suse:libmwaw | 0.3.11-9.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
| suse:liborcus | 0.12.1-12.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
| suse:libreoffice | 5.3.3.2-40.5.9 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
| suse:libstaroffice | 0.0.3-2.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
| suse:libzmf | 0.0.1-2.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
| suse:myspell-dictionaries | 20170511-15.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- High
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-updates/2016-08/msg00070.html
- rhn.redhat.com/errata/RHSA-2016-0072.html
- www.securityfocus.com/bid/92039
- www.ubuntu.com/usn/USN-3067-1
- github.com/behdad/harfbuzz/commit/f96664974774bfeb237a7274f512f64aaafb201e
- github.com/behdad/harfbuzz/issues/139#issuecomment-146984679
- lists.debian.org/debian-lts-announce/2019/12/msg00022.html
- security.gentoo.org/glsa/201701-76
Vendor advisories and official records. Exploit/PoC links are deliberately left out.