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Fencer Intel
medium 6.5

CVE-2015-9274 json

HarfBuzz before 1.0.4 allows remote attackers to cause a denial of service (invalid read of two bytes and application crash) because of GPO…

published 2018-11-15 7 y ago modified 2026-06-17 4 mo ago also EUVD-2015-9116

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

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.

Patch / fix

  • harfbuzz_project harfbuzz 1.0.4
  • harfbuzz Debian 14, Debian 13, Debian 12 1.2.6-1

debian advisories DEBIAN-CVE-2015-9274

  • harfbuzz Ubuntu Pro 16.04 LTS 1.0.1-1ubuntu0.1+esm1

ubuntu advisories UBUNTU-CVE-2015-9274

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-9274 updated cvss 5.3

harfbuzz: DoS due to GPOS and GSUB table mishandling

  • Red Hat Enterprise Linux 6 autocorr-af, autocorr-bg, autocorr-ca, autocorr-cs, autocorr-da, autocorr-de, +60 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 firefox, thunderbird, chromium-browser Red Hat Enterprise Linux 7 harfbuzz, harfbuzz-icu Red Hat Enterprise Linux 8 harfbuzz, harfbuzz-icu, mingw32-harfbuzz, mingw64-harfbuzz
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.55% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.