CVE-2007-1521 Details
Double free vulnerability in PHP before 4.4.7, and 5.x before 5.2.2, allows context-dependent attackers to execute arbitrary code by interrupting the session_regenerate_id function, as demonstrated by calling a userspace error handler or triggering a memory limit violation.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2007-1521
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
8.49 Probability of exploitation activity being observed over the next 30 days (94th percentile)
CVSS score for CVE-2007-1521
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
6.8 Medium
Products affected by CVE-2007-1521
php 1.0
php 1.0.0
php 1.1
php 1.2.3
php 3.0.12
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
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CVE-2007-1521 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 51,097 25.15%
FR 43,807 21.56%
DE 20,220 9.95%
KR 17,011 8.37%
TW 14,957 7.36%
JP 13,410 6.60%
IT 5,897 2.90%
CA 4,999 2.46%
RU 4,431 2.18%
NL 2,849 1.40%

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CVE-2007-1521 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 98,886 69.68%
Technology 39,300 27.69%
Real Estate 946 0.67%
Education 583 0.41%
Utilities 544 0.38%
Media/Entertainment 448 0.32%
Government/Politics 274 0.19%
Business Services 269 0.19%
Retail 202 0.14%
Consumer Goods 86 0.06%

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