CVE-2026-17544
Received
Received - Intake
Out-of-Bounds Write in PHP via bccomp()
Vulnerability report for CVE-2026-17544, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-07-30
Last updated on: 2026-07-30
Assigner: PHP Group
Description
Description
Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| php | php | to 8.4.24 (exc) |
| php | php | to 8.5.9 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
