What is CVE-2026-0943?

CVE-2026-0943 is a high-severity vulnerability in Jv Harfbuzz\, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-01-19.

How severe is CVE-2026-0943?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Jv Harfbuzz\

CVE-2026-0943

HarfBuzz::Shaper versions before 0.032 for Perl contains a bundled library with a null pointer dereference vulnerability. Versions before 0.032 contain HarfBuzz 8.4.0 or earlier bundled as hb_src.tar.gz in the source tarball, which is affected by CVE-2026-22693.

Published 2026-01-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (issue-tracking, Third Party Advisory)
9b29abf9-4ab0-4765-b253-1875cd9b441e (VDB Entry, Third Party Advisory)
9b29abf9-4ab0-4765-b253-1875cd9b441e (release-notes, Product, Release Notes)

Frequently asked questions

What is CVE-2026-0943?: CVE-2026-0943 is a high-severity vulnerability in Jv Harfbuzz\, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-01-19.
How severe is CVE-2026-0943?: High severity. CVSS v3 base score is 7.5 out of 10.