CVE-2011-0420
The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-0420- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-0420- Updated
- 2026-11-02
EUVDEUVD-2011-0446 No score
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.
- Record
EUVD-2011-0446- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-78j2-xvgc-hm94 No score
The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5...
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.
- Record
GHSA-78j2-xvgc-hm94- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10290-1 No score
apache2-mod_php7-7.0.14-1.4 on GA media
These are all security issues fixed in the apache2-mod_php7-7.0.14-1.4 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10290-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10344-1 No score
apache2-mod_php5-5.6.28-1.1 on GA media
These are all security issues fixed in the apache2-mod_php5-5.6.28-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10344-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11169-1 No score
php8-8.0.11-1.1 on GA media
These are all security issues fixed in the php8-8.0.11-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11169-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
php5Debian:5.0 From an advisory covering 8 CVEs |
before 5.2.6.dfsg.1-1+lenny12, plus listed versions 5.2.6.dfsg.1-1+lenny105.2.6.dfsg.1-1+lenny115.2.6.dfsg.1-1+lenny25.2.6.dfsg.1-1+lenny35.2.6.dfsg.1-1+lenny45.2.6.dfsg.1-1+lenny65.2.6.dfsg.1-1+lenny85.2.6.dfsg.1-1+lenny9 |
5.2.6.dfsg.1-1+lenny12 |
php5Debian:6.0 From an advisory covering 8 CVEs |
before 5.3.3-7+squeeze3, plus listed versions 5.3.3-75.3.3-7+squeeze15.3.3-7+squeeze2 |
5.3.3-7+squeeze3 |
php7openSUSE:Tumbleweed From an advisory covering 70 CVEs |
before 7.0.14-1.4 | 7.0.14-1.4 |
php5openSUSE:Tumbleweed From an advisory covering 71 CVEs |
before 5.6.28-1.1 | 5.6.28-1.1 |
php8openSUSE:Tumbleweed From an advisory covering 97 CVEs |
before 8.0.11-1.1 | 8.0.11-1.1 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | PHP 5.3.5 - 'grapheme_extract()' Null Pointer Dereference | 2011-02-17 |
| Exploit-DB | PHP 5.3.5 - 'grapheme_extract()' Null Pointer Dereference Denial of Service | 2011-02-17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-0420 is a medium vulnerability (CVSS 5.0) in Php, published February 18, 2011. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 14.4%, the 96th percentile. No source names a fixed version.
References
securityfocus.com/archive/1/516504/100/0/threaded
debian.org/security/2011/dsa-2266
kb.cert.org/vuls/id/210829
securityreason.com/securityalert/8087
exploit-db.com/exploits/16182
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lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
exchange.xforce.ibmcloud.com/vulnerabilities/65437
support.apple.com/kb/HT5002
svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449&r2=306448&pathrev=306449
nvd.nist.gov/vuln/detail/CVE-2011-0420
github.com/advisories/GHSA-78j2-xvgc-hm94
suse.com/security/cve/CVE-2006-7243