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Critical severity9.8NVD Advisory· Published May 16, 2016· Updated Jun 17, 2026

CVE-2015-6835

CVE-2015-6835

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

66
  • PHP/PHP64 versions
    cpe:2.3:a:php:php:*:*:*:*:*:*:*:*+ 63 more
    • cpe:2.3:a:php:php:*:*:*:*:*:*:*:*range: <=5.4.44
    • cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.15:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.16:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.17:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.26:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.27:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.28:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*
    • cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*
    • (no CPE)range: <5.4.45, <5.5.29, <5.6.13
  • osv-coords2 versions
    pkg:rpm/suse/php5&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2012pkg:rpm/suse/php5&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012
    < 5.5.14-36.1+ 1 more
    • (no CPE)range: < 5.5.14-36.1
    • (no CPE)range: < 5.5.14-36.1

Patches

Vulnerability mechanics

References

6

News mentions

0

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