CVE-2006-4020 EXPLOIT
4.6
MEDIUM · CVSS 2.0 · EPSS 2% (pctl 80)
Patch early
A public exploit exists.
Description
scanf.c in PHP 5.1.4 and earlier, and 4.4.3 and earlier, allows context-dependent attackers to execute arbitrary code via a sscanf PHP function call that performs argument swapping, which increments an index past the end of an array and triggers a buffer over-read.
Scoring
| CVSS | 4.6 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:P/I:P/A:P |
| EPSS | 2.01% — more likely to be exploited than 80% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2006-08-08 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| php | php |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | PHP 4.4.3/5.1.4 - 'sscanf' Local Buffer Overflow | 2006-08-16 |
References
- ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.asc
- http://bugs.php.net/bug.php?id=38322
- http://rhn.redhat.com/errata/RHSA-2006-0688.html
- http://rhn.redhat.com/errata/RHSA-2006-0736.html
- http://secunia.com/advisories/21403
- http://secunia.com/advisories/21467
- http://secunia.com/advisories/21546
- http://secunia.com/advisories/21608
- http://secunia.com/advisories/21683
- http://secunia.com/advisories/21768
- http://secunia.com/advisories/21847
- http://secunia.com/advisories/22004
- http://secunia.com/advisories/22039
- http://secunia.com/advisories/22069
- http://secunia.com/advisories/22440
- http://secunia.com/advisories/22487
- http://secunia.com/advisories/22538
- http://secunia.com/advisories/23247
- http://security.gentoo.org/glsa/glsa-200608-28.xml
- http://securityreason.com/securityalert/1341
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