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Fencer Intel
high 7.5

CVE-2014-8146 in the critical feed json

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Compon…

published 2015-05-25 11 y ago modified 2026-06-17 4 mo ago also EUVD-2014-7988

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
24.7%
EPSS 24.7% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Components for Unicode (ICU) before 55.1 does not properly track directionally isolated pieces of text, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly execute arbitrary code via crafted text.

Patch / fix

  • icu-project international_components_for_unicode 55.1
  • icu Debian 14, Debian 13, Debian 12 52.1-9

debian advisories DEBIAN-CVE-2014-8146

  • icu Ubuntu 14.04 LTS 52.1-3ubuntu0.3

ubuntu advisories UBUNTU-CVE-2014-8146

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

  • icu SLES 12 SP3, SLES 12 SP2-BCL, SLED 12 SP3 +10 more 52.1-8.7.1
  • icu SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +8 more 52.1-8.3.1
  • hyphen SLED 11 SP4, SLE Software Development Kit 11 SP4 2.8.8-2.1
  • mythes SLED 11 SP4, SLE Software Development Kit 11 SP4 1.2.4-2.1
  • libvoikko SLED 11 SP4, SLE Software Development Kit 11 SP4 3.7.1-5.2
  • libreoffice SLED 11 SP4, SLE Software Development Kit 11 SP4 5.0.4.2-23.1
  • python-importlib SLED 11 SP4, SLE Software Development Kit 11 SP4 1.0.2-0.8.1
  • libreoffice-voikko SLED 11 SP4, SLE Software Development Kit 11 SP4 4.1-2.26

suse advisories SUSE-SU-2018:1401-2SUSE-SU-2018:1401-1SUSE-SU-2017:2318-1SUSE-SU-2016:0324-1SUSE-SU-2015:1915-1

  • libreoffice openSUSE Tumbleweed 5.2.3.3-2.2

opensuse advisories openSUSE-SU-2024:10006-1

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-2014-8146 updated cvss 1.2

icu: heap overflow via incorrect isolateCount

  • Red Hat Directory Server 8 icu Red Hat Enterprise Linux 5 icu Red Hat Enterprise Linux 6 icu, libicu Red Hat Enterprise Linux 7 icu, libicu Red Hat OpenShift Enterprise 2 icu
    affected: no fix planned “Will not fix”

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

Timeline

  1. Published
  2. First public exploit (EDB-43887)

Exploit prediction

24.74% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-43887 ICU library 52 < 54 - Multiple Vulnerabilities local, 2015-06-10
  • raw.githubusercontent.com https://raw.githubusercontent.com/pedrib/PoC/master/generic/i-c-u-fail.txt referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org http://seclists.org/fulldisclosure/2015/May/14 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.