CVE-2016-5399

Status: ModifiedHigh (7.8)—💥 Exploit
The bzread function in ext/bz2/bz2.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted bz2 archive.
CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base score: 7.8
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 9.84%
Percentile among all scored CVEs: 96
Score date: 10/17/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.
Published on Exploit-DB · PHP 5.5.37/5.6.23/7.0.8 - 'bzread()' Out-of-Bounds Write (7/25/2016)
Affected technologies (1)

PHP — PHP
CWEs

CWE-787
References

Raw JSON (NVD)

Show
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  "lastModified": "2026-06-17T00:49:20.413",
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