CVE-2011-0420
MEDIUM · CVSS 5.0EPSS 14.4%EU EUVD
The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5 allows context-dependent attackers to cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- EPSS score
- 14.4% (97th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-0446)
- Published
- February 19, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-0446 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- php / php
References
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
- http://securityreason.com/achievement_securityalert/94(Exploit)
- http://securityreason.com/securityalert/8087
- http://support.apple.com/kb/HT5002
- http://svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449&r2=306448&pathrev=306449(Patch)
- http://www.debian.org/security/2011/dsa-2266
- http://www.exploit-db.com/exploits/16182
- http://www.kb.cert.org/vuls/id/210829(US Government Resource)
- http://www.securityfocus.com/archive/1/516504/100/0/threaded
- http://www.securityfocus.com/archive/1/516518/100/0/threaded
- http://www.securityfocus.com/bid/46429(Exploit)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65437
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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