The collator implementation in i18n/ucol.cpp in International Components for Unicode (ICU) 52 through SVN revision 293126, as used in Google Chrome before 40.0.2214.91, does not initialize memory for a data structure, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted character sequence.
Conclusion & alert: CVE-2014-7940 is rated Moderate Risk (60.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.42%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-04-20 | 2.15% | 2.42% | +0.27% |
| 2 | 2025-07-12 | 2.73% | 2.15% | -0.58% |
| 3 | 2025-03-30 | — | 2.73% | — |
Full EPSS history (9 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-2014-7940 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-2014-7940 |
gentoo
|
normal | CVE-2014-7940: 2 GLSA(s) (201502-13, 201503-06), 2 atom(s) (dev-libs/icu, www-client/chromium); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-7940 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2014-7940 |
ubuntu
|
medium | CVE-2014-7940 medium priority: Ubuntu including 3 source packages (chromium-browser, icu, oxide-qt), 21 status rows across 7 suites (lucid, precise, trusty, upstream, utopic, vivid, wily): released 14, ignored 3, DNE 2, not-affected 2. | https://ubuntu.com/security/CVE-2014-7940 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| chrome | <= 40.0.2214.85 | cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* | |
| icu-project | international_components_for_unicode | <= 52.1 | cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:* |