The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Components for Unicode (ICU) before 55.1 uses an integer data type that is inconsistent with a header file, which allows remote attackers to cause a denial of service (incorrect malloc followed by invalid free) or possibly execute arbitrary code via crafted text.
Conclusion & alert: CVE-2014-8147 is rated High Exploit Risk (80.5/100): CVSS High severity, with high exploitation likelihood (EPSS 41.90%, 97th percentile). Core evidence: 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.49% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 43887 | exploit_db | edb | 2015-06-10 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-09 | 40.41% | 41.90% | +1.49% |
| 2 | 2025-07-16 | 42.79% | 40.41% | -2.37% |
| 3 | 2025-07-12 | — | 42.79% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2014-8147 not yet assigned priority: Debian including 1 source packages (icu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2014-8147 |
gentoo
|
normal | CVE-2014-8147: 1 GLSA(s) (201507-04), 1 atom(s) (dev-libs/icu); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-8147 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2014-8147 |
suse
|
high | CVE-2014-8147 severity important: SUSE including 1308 source package names (apache-commons-logging-1.1.3-7.1, flute-1.3.0-4.2, …), 2199 product×package rows across 73 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (73 product lines)): Fixed 2188, Known Not Affected 11. | https://www.suse.com/security/cve/CVE-2014-8147/ |
ubuntu
|
medium | CVE-2014-8147 medium priority: Ubuntu including 1 source packages (icu), 5 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): released 4, not-affected 1. | https://ubuntu.com/security/CVE-2014-8147 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apple | mac_os_x | <= 10.10.4 | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
| apple | watchos | <= 1.0.1 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| icu-project | international_components_for_unicode | < 55.1 | cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:* |