CVE-2015-6835
critical-risk
Published 2016-05-16
The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content.
Do I need to act?
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21.3% chance of exploitation in next 30 days
EPSS score — higher than 79% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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1 public exploit available
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (12)
80
/ 100
critical-risk
Severity
32/34 · Critical
Exploitability
21/34 · High
Exposure
27/34 · High