php: Use After Free in unserialize()
Published Jan 4, 2017
9.8
CRITICALCVSS 3.0
EPSS 4.27%
Description
The unserialize implementation in ext/standard/var.c in PHP 7.x before 7.0.14 allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted serialized data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6834.
Affected products
No data.
- 7.0.0
- 7.0.1
- 7.0.2
- 7.0.3
- 7.0.4
- 7.0.5
- 7.0.6
- 7.0.7
- 7.0.8
- 7.0.9
- 7.0.10
- 7.0.11
- 7.0.12
- 7.0.13
No data.
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-php70-php-0:7.0.27-1.el6
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-php70-php-0:7.0.27-1.el6
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
rh-php70-php-0:7.0.27-1.el7
Fixed · RHSA-2018:1296
Red Hat Enterprise Linux 5
php
Will not fix
Red Hat Enterprise Linux 5
php53
Will not fix
Red Hat Enterprise Linux 6
php
Will not fix
Red Hat Enterprise Linux 7
php
Will not fix
Red Hat OpenShift Enterprise 2
php
Will not fix
Red Hat Software Collections
rh-php56-php
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-php70-php-0:7.0.27-1.el6 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-php70-php-0:7.0.27-1.el6 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS | rh-php70-php-0:7.0.27-1.el7 | Fixed | RHSA-2018:1296 |
| Red Hat Enterprise Linux 5 | php | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | php53 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | php | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | php | Will not fix | n/a |
| Red Hat OpenShift Enterprise 2 | php | Will not fix | n/a |
| Red Hat Software Collections | rh-php56-php | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 4.27% (0.04267) | 90.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.27% (0.04267) | 89.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.30% (0.00301) | 50.41th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.35% (0.01355) | 67.96th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.30% (0.00301) | 51.26th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.83% (0.01830) | 88.72th | v3 (v2023.03.01) |
| Apr 6, 2024 | 1.83% (0.01830) | 87.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.46% (0.01459) | 84.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (11)
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html vendor-advisoryx_refsource_SUSE
- http://www.openwall.com/lists/oss-security/2016/12/12/2 mailing-listx_refsource_MLISTMailing List
- http://www.php.net/ChangeLog-7.php x_refsource_CONFIRMPatchRelease Notes
- http://www.securityfocus.com/bid/94849 vdb-entryx_refsource_BID
- https://access.redhat.com/errata/RHSA-2018:1296 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2016-9936 Vendor Advisory
- https://bugs.php.net/bug.php?id=72978 x_refsource_CONFIRMExploitIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1404735 Issue Tracking
- https://github.com/php/php-src/commit/b2af4e8868726a040234de113436c6e4f6372d17 x_refsource_CONFIRMPatch
- https://nvd.nist.gov/vuln/detail/CVE-2016-9936
- https://www.cve.org/CVERecord?id=CVE-2016-9936
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html | vendor-advisoryx_refsource_SUSE | |
| http://www.openwall.com/lists/oss-security/2016/12/12/2 | mailing-listx_refsource_MLISTMailing List | |
| http://www.php.net/ChangeLog-7.php | x_refsource_CONFIRMPatchRelease Notes | |
| http://www.securityfocus.com/bid/94849 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/errata/RHSA-2018:1296 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2016-9936 | Vendor Advisory | |
| https://bugs.php.net/bug.php?id=72978 | x_refsource_CONFIRMExploitIssue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1404735 | Issue Tracking | |
| https://github.com/php/php-src/commit/b2af4e8868726a040234de113436c6e4f6372d17 | x_refsource_CONFIRMPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-9936 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-9936 |
Change history (0)
No recorded changes yet.