Skip to content
Fencer Vulns
medium 4.3

CVE-2009-0153 json

International Components for Unicode (ICU) 4.0, 3.6, and other 3.x versions, as used in Apple Mac OS X 10.5 before 10.5.7, iPhone OS 1.0 th…

published 2009-05-13 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0162

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

International Components for Unicode (ICU) 4.0, 3.6, and other 3.x versions, as used in Apple Mac OS X 10.5 before 10.5.7, iPhone OS 1.0 through 2.2.1, iPhone OS for iPod touch 1.1 through 2.2.1, Fedora 9 and 10, and possibly other operating systems, does not properly handle invalid byte sequences during Unicode conversion, which might allow remote attackers to conduct cross-site scripting (XSS) attacks.

Patch / fix

  • icu Debian 14, Debian 13, Debian 12 4.0.1-1

debian advisories DEBIAN-CVE-2009-0153

  • icu RHEL 5 3.6-5.11.4
  • libicu RHEL 5 3.6-5.11.4

red hat advisories RHSA-2009:1122

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-2009-0153 updated cvss 6.1

icu: XSS vulnerability due to improper invalid byte sequence handling

  • Red Hat Enterprise Linux (v. 5 server) icu 3.6-5.11.4, libicu 3.6-5.11.4 Red Hat Enterprise Linux Desktop (v. 5 client) icu 3.6-5.11.4, libicu 3.6-5.11.4 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) icu 3.6-5.11.4, libicu 3.6-5.11.4
    fixed: vendor fix RHSA-2009:1122

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

Exploit prediction

3.68% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns 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.