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Fencer Intel
medium 5.5

CVE-2026-108063 json

Libhangul: null pointer dereference in hanja_new() when looking up a malformed hanja dictionary entry

published last mo. modified 4d ago also EUVD-2026-95776

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).

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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-2026-108063 updated cvss 5.5

libhangul: NULL pointer dereference in hanja_new() when looking up a malformed Hanja dictionary entry

  • Red Hat Enterprise Linux 6 libhangul 0.1.0-33.el10
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 libhangul 0.1.0-33.el10 Red Hat Enterprise Linux 8 libhangul 0.1.0-33.el10 Red Hat Enterprise Linux 9 libhangul 0.1.0-33.el10 Red Hat Enterprise Linux 10 libhangul 0.1.0-33.el10
    affected: workaround, no fix available “Fix deferred”

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

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.