Multiple use-after-free vulnerabilities in ext/date/php_date.c in PHP before 5.4.38, 5.5.x before 5.5.22, and 5.6.x before 5.6.6 allow remote attackers to execute arbitrary code via crafted serialized input containing a (1) R or (2) r type specifier in (a) DateTimeZone data handled by the php_date_timezone_initialize_from_hash function or (b) DateTime data handled by the php_date_initialize_from_hash function.
Conclusion & alert: CVE-2015-0273 is rated High Exploit Risk (74.4/100): CVSS High severity, with high exploitation likelihood (EPSS 60.76%, 98th percentile). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 36158 | exploit_db | edb | 2015-02-23 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-05-24 | 71.15% | 60.76% | -10.39% |
| 2 | 2026-05-23 | 71.56% | 71.15% | -0.41% |
| 3 | 2026-05-09 | — | 71.56% | — |
Full EPSS history (45 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 |
|---|---|---|---|
gentoo
|
normal | CVE-2015-0273: 1 GLSA(s) (201606-10), 1 atom(s) (dev-lang/php); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-0273 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2015-0273 |
suse
|
high | CVE-2015-0273 severity important: SUSE including 799 source package names (apache2-mod_php5-5.5.14-15.1, apache2-mod_php5-5.6.28-1.1, …), 814 product×package rows across 22 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Module for Legacy 15 SP4, … (22 product lines)): Fixed 609, Will Not Fix 158, Known Not Affected 47. | https://www.suse.com/security/cve/CVE-2015-0273/ |
ubuntu
|
medium | CVE-2015-0273 medium priority: Ubuntu including 1 source packages (php5), 5 status rows across 5 suites (lucid, precise, trusty, upstream, utopic): released 5. | https://ubuntu.com/security/CVE-2015-0273 |
: <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| php | php | <= 5.4.37 | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:* |
| php | php | 5.5.0 | cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:* |
| php | php | 5.5.1 | cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:* |
| php | php | 5.5.2 | cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:* |
| php | php | 5.5.3 | cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:* |
| php | php | 5.5.4 | cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:* |
| php | php | 5.5.5 | cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:* |
| php | php | 5.5.6 | cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:* |
| php | php | 5.5.7 | cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:* |
| php | php | 5.5.8 | cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:* |
| php | php | 5.5.9 | cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:* |
| php | php | 5.5.10 | cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:* |
| php | php | 5.5.11 | cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:* |
| php | php | 5.5.12 | cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:* |
| php | php | 5.5.13 | cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:* |
| php | php | 5.5.14 | cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:* |
| php | php | 5.5.15 | cpe:2.3:a:php:php:5.5.15:*:*:*:*:*:*:* |
| php | php | 5.5.16 | cpe:2.3:a:php:php:5.5.16:*:*:*:*:*:*:* |
| php | php | 5.5.17 | cpe:2.3:a:php:php:5.5.17:*:*:*:*:*:*:* |
| php | php | 5.5.18 | cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:* |
| php | php | 5.5.19 | cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:* |
| php | php | 5.5.20 | cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:* |
| php | php | 5.5.21 | cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:* |
| php | php | 5.6.0 | cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:* |
| php | php | 5.6.1 | cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* |
| php | php | 5.6.2 | cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* |
| php | php | 5.6.3 | cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* |
| php | php | 5.6.4 | cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* |
| php | php | 5.6.5 | cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* |